Getting Pregnant on Wegovy: What the Guidance Says and What to Do Next

What official UK guidance says about Wegovy and pregnancy

The position in the UK is not ambiguous. Semaglutide is not authorised for use in pregnancy, and both the NHS and the Medicines and Healthcare products Regulatory Agency advise stopping treatment as soon as pregnancy is confirmed. The NHS England overview of weight-management injections addresses this directly: if you become pregnant while on a GLP-1 medicine, discontinue it and contact your maternity team promptly.

This caution comes from the absence of adequate human safety data, combined with findings from animal reproductive studies that showed adverse effects at exposures relevant to therapeutic doses. That does not mean a brief exposure early in pregnancy will cause harm, it means the data to reassure us simply does not exist yet. Regulators take the precautionary approach, which is the right one. If you are wondering whether you can take Wegovy if you are pregnant, your midwife and GP are the people best placed to interpret your individual situation once they know what week you are, how long you were on Wegovy, and your overall health picture.

One practical note worth knowing: semaglutide has a long half-life. After your last weekly injection, the medicine continues to clear from your system over roughly five weeks. So even once you stop, it remains biologically present for a period. This is another reason early disclosure to your maternity team matters, they will want to know the full timeline.

What to do the moment you get a positive test

Stop the injection. Do not take the next scheduled dose. The pen in your fridge door (or wherever you store it) stays there. Contact your GP surgery the same day or the next morning at the latest; if you cannot reach your GP, your midwife team or an NHS 111 call can bridge the gap while you wait for a proper appointment.

When you speak to your doctor, be ready to tell them: the dose you were on, how recently you took your last injection, and how far along you think you are. They will not judge you for having been on weight-loss treatment, and our page covering what happens if you have got pregnant on Wegovy explains why this situation is more common than many people realise, partly because, as explored on our page about Wegovy and fertility, GLP-1 medicines can improve ovulation regularity in people with conditions such as PCOS, sometimes making conception more likely than expected.

Your GP may want to arrange earlier dating scans or additional monitoring. That is standard care, not a sign that something has gone wrong. The priority at this stage is establishing accurate dates and getting you into appropriate maternity care.

Contraception, the wash-out period, and planning ahead

For anyone on Wegovy who is not currently pregnant but wants to conceive in the future, UK guidance is clear about timing. MHRA advice calls for effective contraception throughout treatment. Before trying for a baby, you should stop Wegovy and allow at least two months for the medicine to fully clear before attempting conception. This wash-out period is designed to reduce foetal exposure to semaglutide during the critical early weeks of pregnancy.

If you were already planning to conceive, the right conversation is with your prescriber before you stop contraception, not after a positive test. Our clinical team can help you think through when and how to pause treatment, you can read more about Wegovy and pregnancy planning or explore how becoming pregnant while on Wegovy is handled clinically. Stopping the medicine does not erase the metabolic benefits you have built, many people maintain a meaningful portion of their weight loss for months afterwards, especially when lifestyle habits are in place.

Breastfeeding carries the same caution: semaglutide is not recommended while nursing, because it is not known whether the medicine passes into breast milk or what effect it might have on a feeding infant. A clinician will advise on when it is appropriate to restart treatment after pregnancy and breastfeeding are complete.

Returning to Wegovy after pregnancy

Restarting semaglutide after you have given birth and finished breastfeeding is possible, but it requires a fresh clinical assessment, not just picking up where you left off. The dose schedule starts again from the beginning (the same gradual titration used when treatment is initiated) to give your body time to readjust and to minimise side effects. A lot can change during pregnancy and the postnatal period, so a prescriber will want a current picture of your weight, health, and any new conditions before recommending a path forward, and our dedicated page on Wegovy and being pregnant sets out what that process involves.

If you want to understand your options for weight management after pregnancy, our weight-loss treatment overview covers what is available and how clinical assessment works. When you are ready, speaking to our prescribers is the starting point, every consultation is reviewed by a GPhC-registered Independent Prescriber, and there is no pressure to restart treatment before you feel ready.