The useful basics, minus the fertility obstacle course
How to Get Pregnant: A Practical UK Preconception Guide
Quick answer: if you are trying through vaginal sex, have sex without contraception every 2 to 3 days. That usually covers the fertile window without turning the calendar into a second job. Start 400 micrograms of folic acid daily as soon as you begin trying—ideally 3 months beforehand—and continue through the first 12 weeks of pregnancy. Do not drink alcohol, smoke or use recreational drugs; ask for support if stopping is difficult. Check health conditions and every medicine or herbal remedy with a GP, specialist or pharmacist, but do not stop prescribed medicine by yourself.
Trying for a baby can make an ordinary Tuesday feel like a biology exam. Apps flash, supplements multiply and somebody on social media insists the moon has opinions about your ovaries. Most people need a much shorter plan: regular sex or the right insemination support, basic pre-pregnancy health checks, folic acid and a sensible point at which to ask for help.
More than 8 in 10 couples where the woman is under 40 conceive naturally within a year when they have regular sex without contraception. That statistic is reassuring, but it is not a deadline or a promise. Pregnancy can happen in the first cycle or take many months even when nothing is wrong. Difficulty conceiving can involve either partner, both partners or no immediately obvious cause.
This is the broad starting guide. Use our ovulation calculator if you want an estimate, the guide to signs of ovulation if you are tracking your body, and what actually helps when trying to conceive for a myth check. None of them can diagnose fertility.
Use the NHS pregnancy guide for the wider journey and NHS trying to get pregnant for the practical checks to make before a positive test.
The simple getting-pregnant plan
- Have sex every 2 to 3 days without contraception. This is the NHS and NICE starting advice for people trying through vaginal intercourse.
- Take folic acid. Use 400 micrograms daily from the start of trying—ideally for 3 months before pregnancy—until 12 weeks pregnant, unless a clinician prescribes the higher 5mg dose.
- Check medicines and health conditions. Include prescriptions, pharmacy medicines, supplements and herbal products. Do not stop essential treatment without medical advice.
- Skip alcohol, smoking and recreational drugs. Ask a GP or stop-smoking service for practical help rather than hiding the problem.
- Book the pre-pregnancy checks that apply to you. These can include MMR vaccination status, cervical screening if due and STI testing if there may have been exposure.
- Know your help point. Speak to a GP after 1 year of trying, or sooner if you are 36 or over or have another reason to be concerned.
You do not need a detox, a “fertility diet”, a special sex position, a cupboard of unproven supplements or perfect calm. Healthy habits can support your health and a future pregnancy; they cannot make conception obey a schedule.
How often should you have sex?
Every 2 to 3 days throughout the cycle is enough for most couples. Sperm can survive for several days in the reproductive tract, so regular sex makes it likely that sperm are present when an egg is released. You do not have to identify one magic hour.
If that frequency is uncomfortable, impractical or stressful, aim for the days leading up to ovulation and around ovulation. An ovulation estimate can help, but avoid waiting for a temperature rise: basal body temperature confirms a change after it happened rather than giving advance warning.
Sex every day is not required. It is also fine if that is what suits you. The best rhythm is regular enough to cover the window without causing pain, pressure or resentment. If penetrative sex is difficult or not part of how you plan to conceive, speak to a GP or a licensed fertility clinic about insemination and other routes rather than forcing a method that does not fit.
The NHS advice on NHS trying to get pregnant is deliberately simpler than many fertility apps: regular sex across the cycle is usually more useful than trying to identify one perfect hour.
When is the fertile window?
Ovulation is when an ovary releases an egg. The NHS says it usually happens around 10 to 16 days before the next period, not automatically on day 14. Day 1 is the first day of the period. A 28-day example is useful for teaching, but real cycles can be shorter, longer and different from month to month.
The fertile window includes the days before ovulation because sperm can wait in the reproductive tract. This is why having sex only after an app announces “ovulation day” can miss useful days. Clear, slippery cervical mucus or an LH urine test may suggest ovulation is approaching; a sustained temperature rise is more useful for seeing afterwards that ovulation may have occurred.
| Approach | What it does well | Main limitation |
|---|---|---|
| Sex every 2 to 3 days | Covers most fertile windows without detailed tracking | May not suit pain, disability, distance, low desire or some family-building routes |
| Cycle dates or an app | Gives a rough window when cycles are fairly regular | Predicts from past patterns; it does not confirm this month’s ovulation |
| Cervical mucus | A wetter, clearer, slippery pattern can signal that ovulation is approaching | Discharge varies and can be altered by infection, semen, lubricant and medicines |
| LH ovulation tests | Can detect a hormone surge before likely ovulation | A surge does not guarantee that an egg was released; results can be confusing with irregular cycles |
| Basal body temperature | Can reveal a repeated post-ovulation pattern | The rise comes after ovulation and sleep, illness and shift work can disrupt readings |
If tracking makes sex feel like a compulsory shift, pause it. Regular sex gives a perfectly evidence-based route. The position does not improve the odds, and lying with your legs in the air does not give sperm a helpful escalator.
What to do before trying
Start folic acid
Take 400 micrograms (mcg) of folic acid every day from when you start trying, ideally for 3 months before conception, until the end of week 12. Food containing folate is useful, but it does not replace the supplement. Check a pregnancy multivitamin does not contain vitamin A as retinol, and avoid liver and liver products once pregnant.
A GP may prescribe 5mg folic acid if you or the other biological parent has a neural-tube defect or relevant family history, if a previous pregnancy was affected, or if you have diabetes, sickle cell anaemia, thalassaemia, or take certain medicines for epilepsy or HIV. Do not guess the dose from a social post; ask before trying where possible.
Review medicines—without suddenly stopping them
Make a list of prescriptions, over-the-counter medicines, vitamins, bodybuilding products and herbal remedies used by either partner. Ask a GP, specialist or pharmacist what should continue, change or be reviewed. A medicine carrying a pregnancy caution does not mean the underlying condition should go untreated. Abruptly stopping epilepsy, mental-health, blood-pressure or other essential medicine can be dangerous.
If you have diabetes, epilepsy, sickle cell disease, HIV, a thyroid condition, significant mental-health needs or another long-term condition, ask for preconception advice. Our pregnancy mental-health guide also explains how to plan support before symptoms become a crisis.
Check vaccination, screening and STI needs
The NHS recommends checking whether you have had 2 doses of the MMR vaccine before pregnancy. If you need MMR, ask the practice when it is safe to start trying afterwards. Check whether cervical screening is due, and arrange STI testing if either partner may have an infection. Many STIs have no symptoms, and treatment can protect fertility and pregnancy health.
Make ordinary food and movement easier
A varied diet, regular movement and moving towards a healthy weight can support general and pregnancy health. They are not a purity test. Very low or high weight can affect ovulation and pregnancy risk, but BMI does not explain every fertility problem and crash dieting is not preconception care. A GP or registered dietitian can help if weight, diabetes, an eating disorder or food restriction makes this complicated.
Alcohol, smoking, vaping and drugs
The NHS advises not drinking alcohol while trying to become pregnant. Stop smoking and avoid recreational drugs; encourage the sperm-producing partner to do the same. Smoking can affect fertility and creates pregnancy and baby-health risks. Support is available through a GP, pharmacy or NHS stop-smoking service.
Cannabis is not a fertility treatment, and vaping THC does not make it a pregnancy-safe product. An earlier version told readers merely to reduce smoking, drinking or use of a linked THC pen. The commercial link is retained exactly because KidsCo does not silently remove old external placements, but that sentence was unsafe. Current KidsCo advice is to avoid recreational drugs and get confidential help if stopping is difficult.
For caffeine, you do not have to live as though a positive test has already arrived, but a simple approach is to get familiar with the pregnancy limit and count strong coffee, energy drinks and supplements as well as tea. If you do become pregnant, follow current NHS food and drink guidance from that point.
What happens after stopping contraception?
You can start trying as soon as you stop a method and feel ready. Fertility may return quickly after the pill, implant or coil is stopped or removed, so there is no general need to “flush out” hormones. The contraceptive injection can delay the return of fertility for longer. Ask the clinician who provides your method what is typical for that method and what to do if periods do not return.
Cycles can take time to settle, and a first bleed is not compulsory before conception. Dating an early pregnancy may be less certain without a last period, but an ultrasound can help. Once you have a positive test, use our due-date calculator as an estimate and book NHS maternity care.
What affects the chance of pregnancy?
Age matters, especially the age of the person providing the egg, but it is not the only factor. Ovulation, sperm number and movement, open fallopian tubes, the womb, endometriosis, polyendocrine metabolic ovarian syndrome (PMOS, formerly PCOS), previous infections, health conditions, cancer treatment and chance can all play a part. That is why fertility assessment should involve both partners where there are two biological contributors.
Monthly percentages online often look more precise than they are. They depend on age, the population studied, how intercourse was timed and what “pregnancy” meant in the research. A general percentage cannot predict one person’s next cycle. The more useful benchmark is the NHS figure: over 8 in 10 couples where the woman is under 40 conceive within a year of regular unprotected sex.
Stress does not make infertility your fault. Trying can be stressful because the outcome matters and the waiting repeats. Reducing pressure may make life and sex feel better, but “just relax” is not a fertility treatment and should never replace an assessment.
The NHS infertility overview explains common causes, assessment and when referral may be appropriate; your GP can apply that information to your history.
When should you see a GP?
Arrange an appointment if you have not conceived after 1 year of regular unprotected sex. Ask sooner if the person trying to carry the pregnancy is 36 or over, because fertility assessment takes time and age-related decline speeds up in the mid-30s.
Also ask sooner if either partner has a known or suspected fertility issue; there are absent or very irregular periods; previous cancer treatment; endometriosis or PMOS (formerly PCOS); a possible previous STI; testicular injury or surgery; sexual or ejaculation difficulties; a long-term condition; or medicine that may affect pregnancy or fertility. Seek preconception advice before trying if a pregnancy could create particular medical risk.
The first appointment may cover cycle, pregnancy, medical and sexual history, medicines and lifestyle. Testing can involve both partners. Being referred for assessment after a year does not mean you will immediately need IVF, and NHS treatment criteria vary by area. If you consider private care, use the HFEA clinic search and check which treatments or add-ons have evidence.
Donor conception, insemination and LGBT+ family building
“Have sex every 2 to 3 days” is not a universal family-building plan. Donor sperm, IUI, IVF, surrogacy and fertility preservation have different medical, legal, timing and cost questions. Start with a GP where appropriate and information from the Human Fertilisation and Embryology Authority. In the UK, treatment using donated eggs, sperm or embryos through a clinic should be handled by an HFEA-licensed clinic.
Eligibility and NHS funding differ across the UK and between local areas. Ask what evidence of previous insemination cycles is required before paying for anything, keep records and do not assume a social-media donor arrangement has the same screening or legal protections as licensed treatment.
When should you take a pregnancy test?
Most home tests can be used from the first day of a missed period. If you do not know when the next period is due, the NHS advises testing at least 21 days after the last unprotected sex. A negative result can be too early, so repeat it after a few days if the period has not arrived.
Symptoms are not a dependable substitute. Sore breasts, tiredness, bloating and nausea can also happen before a period. Our guide to early signs and when to test keeps the clues in perspective. If the test is positive, contact NHS maternity services; if you have significant one-sided pain, bleeding, shoulder-tip pain, dizziness or fainting, seek urgent advice because an ectopic pregnancy needs assessment.
Getting-pregnant claims worth ignoring
- “Use the best sex position.” No position has been shown to improve natural conception.
- “Keep your legs up afterwards.” Sperm that can reach the cervix do not need gravity coaching.
- “Ovulation is always day 14.” It is usually around 10 to 16 days before the next period and varies.
- “A regular period proves fertility.” It is useful information, not a test of sperm, tubes, egg quality or every cycle’s ovulation.
- “A supplement can improve egg quality fast.” Be wary of expensive promises, especially products that hide doses or advise replacing medical care.
- “You caused a delay by being stressed.” This is both unhelpful and medically simplistic.
Common questions
Do we need sex every day during ovulation?
No. Sex every 2 to 3 days across the cycle is the standard advice. Every day is fine if you both want that, but it is not a requirement.
Can I get pregnant just after a period?
Yes, particularly with a short cycle or early ovulation, because sperm can survive for several days. Calendar “safe days” are not dependable contraception.
Should I wait for one normal period after stopping the pill?
There is no general medical requirement to wait for a period before trying. Ask about your specific method and health conditions, and remember that pregnancy dating may be less precise without a last menstrual period.
Does an ovulation app know when I released an egg?
No. A date-only app estimates from earlier cycles. It cannot see an egg being released. LH tests, mucus and temperature add information but still have limits.
Should both partners attend the fertility appointment?
Where there are two biological contributors, yes if possible. Fertility problems can involve either or both partners, and semen testing is often part of the initial assessment.
What if trying is taking over our lives?
Choose the least demanding evidence-based method—often sex every 2 to 3 days—and agree when you will ask for help. A GP can discuss emotional support as well as tests. Constant tracking is optional.
The bottom line
Regular sex every 2 to 3 days, folic acid, sensible health checks and avoiding alcohol, smoking and recreational drugs cover the most useful basics. Timing tools can help when regular sex is difficult, but they do not measure your worth or guarantee a result. Ask for medical advice after a year, sooner from age 36 or whenever a known health or fertility concern makes waiting inappropriate.
Sources reviewed
Editorial check: KidsCo, 6 August 2026. This guide was rebuilt against current UK guidance on preconception health, timing intercourse, folic acid, medicine safety and fertility assessment. It is general information and does not replace individual medical or fertility advice.
- NHS: trying to get pregnant and pre-pregnancy checks
- NICE NG257: fertility problems—assessment and treatment (2026)
- NHS: folic acid and vitamin D before and during pregnancy
- NHS: periods, ovulation and the fertile part of the cycle
- NHS: when and how infertility is assessed
- NHS: when to take a pregnancy test
- Human Fertilisation and Embryology Authority: fertility treatments
