Contraception after a birth

You can become pregnant 3 weeks after a birth, even if you are breastfeeding and have not had a period. If you want to avoid pregnancy, make a contraception plan before resuming sex that could lead to pregnancy.

When you can start each method

Your midwife can discuss contraception after the birth, and you can ask a GP or sexual health clinic at any time. Tell the clinician whether you are breastfeeding and what you want from a method. Ask when it can be started, whether extra contraception is needed initially, and who to contact with questions.

The timetable below describes NHS guidance. Your clinician can help you use it to choose a suitable method. Advice differs between countries, particularly for combined hormonal methods during breastfeeding.

Method	NHS timing after birth
Progestogen-only pill, implant or injection	Can be started straight after birth, including while breastfeeding.
External or internal condoms	Can be used straight after birth.
Copper IUD or hormonal IUS	Can be fitted within 48 hours; otherwise usually wait until 4 weeks.
Combined pill, patch or vaginal ring	From 3 weeks if not breastfeeding and a clinician confirms no clot risk factors; usually at least 6 weeks if breastfeeding.
Diaphragm or cap	Usually around 6 weeks; have the fit checked again.

Your options while breastfeeding

Several options are available while breastfeeding, including progestogen-only methods and coils. The US CDC also allows an implant to be placed during the postpartum period, including while breastfeeding, after a clinician checks it is suitable. Ask how your feeding plans affect the method you are considering.

Combined pills, patches and vaginal rings contain oestrogen and a progestogen. A clinician needs to check when you can start them. The NHS usually advises waiting at least 6 weeks while breastfeeding. CDC uses more detailed categories: combined methods are excluded before 21 days, generally avoided from 21 to <30 days, and may be considered at 30–42 days for breastfeeding patients without additional clot risk factors.

Ask your clinician to explain the local guidance and check whether a combined method is suitable for you. If a method has already been prescribed, discuss concerns with the prescriber before changing it.

Using breastfeeding as contraception

The lactational amenorrhoea method, usually called LAM, uses breastfeeding to delay ovulation. It only works as contraception under specific conditions.

NHS instructions require breastfeeding at least every 4 hours in the day and every 6 hours at night. LAM is limited to the first 6 months after birth and stops being suitable if periods return or you give formula or solid food. Expressing breast milk may make it less effective; research on this is limited.

US CDC criteria are phrased as no periods, fully or nearly fully breastfeeding, and less than 6 months postpartum. Feeding gaps must not exceed 4 hours by day or 6 hours at night. The wording about feeding differs from NHS guidance, so ask a trained clinician to explain the method used where you get care.

Plan another method if feeds become less frequent, night feeds stop, formula is introduced or your period returns. The NHS counts even light spotting as a reason to start another method. Ask for advice when feeding changes rather than assuming the previous plan still applies.

Fertility awareness and app estimates

Veya’s estimates are not contraception. NHS advice says fertility-awareness methods need teaching by a trained professional, and it does not officially recommend fertility-tracking apps or devices. LAM also does not prevent sexually transmitted infections; condoms reduce the risk of passing on infections.

Getting advice after unprotected sex

Contact a sexual health clinic, GP or pharmacist today in the UK, or your doctor or local contraception service in the US and elsewhere, if you have had sex without effective contraception and want to avoid pregnancy. Emergency contraception is time-sensitive. Tell them when you gave birth, when sex happened, whether you are breastfeeding and which contraception you have used, so they can advise what is needed and suitable.

For a planned method, book a contraception appointment with your GP, midwife or sexual health clinic in the UK, or your doctor or midwife elsewhere. Take your questions about feeding, start dates and any current medicines with you.