Can You Get Pregnant on Mounjaro or Wegovy?

Neither Mounjaro nor Wegovy is recommended for use during pregnancy. The product information for both medicines advises that they should be discontinued before a planned pregnancy, and that if pregnancy occurs during treatment, the medicine should be stopped. This reflects the fact that there is currently limited human safety data on the use of tirzepatide or semaglutide during pregnancy, and animal studies have raised concerns at high doses.

Why these medicines are not used in pregnancy

Both Mounjaro and Wegovy act on appetite-regulating hormones — tirzepatide on both GIP and GLP-1 receptors, semaglutide on GLP-1 receptors. During pregnancy, adequate nutrition is critical for foetal development, and the appetite-suppressing effects of these medicines could interfere with that. On current evidence, the precautionary approach is to avoid exposure during pregnancy.

How long before trying to conceive should you stop?

According to the electronic Medicines Compendium (eMC) product information, available at medicines.org.uk, Wegovy (semaglutide) is recommended to be stopped at least two months before a planned pregnancy, due to its relatively long washout period. For Mounjaro (tirzepatide), the guidance in the product information should be followed — check the patient information leaflet that came with your pen, or discuss the exact timing with your prescriber, as recommendations may be updated. These timelines are set by prescribers on an individual basis; they are not a decision to make without professional input.

What if you got pregnant while taking Mounjaro or Wegovy?

If you discover you are pregnant while taking either medicine, contact your prescriber or doctor promptly. They will advise on stopping the medicine and on appropriate monitoring. This is a special-care situation — do not wait for your next scheduled appointment if you believe you may be pregnant. You can read more about what happens in this scenario on our dedicated page about falling pregnant on Mounjaro and what to do next.

Can GLP-1 medicines affect fertility?

Some people report that weight loss associated with GLP-1 treatment may influence hormonal cycles, which in some cases could affect fertility. This is an area where evidence is still developing, and any questions about fertility and these medicines should be discussed with your prescriber or doctor, who can consider your individual circumstances. For context on how Mounjaro works more broadly, see our overview of how Mounjaro works.

Important: If you are trying to conceive, pregnant, or breastfeeding, discuss this with your healthcare professional before continuing or stopping any prescribed medicine. Never stop or change your medication without their guidance.

If you are at a stage where pregnancy is a consideration, keeping a clear, accurate record of your medication history becomes especially important — both for your own awareness and to support conversations with your prescriber or doctor.

GLP Trackr's dose and injection logging lets you build a precise record of every dose you have taken — dates, dose strengths, and timing — so that if questions arise about when you last took the medicine, you have a reliable log to refer to. This kind of record can be genuinely useful to share with your healthcare professional at appointments.

The app's doctor report feature can also help you bring a clear summary of your tracked journey to those conversations, so nothing gets missed. You can also use the side-effect tracker to note any symptoms you are experiencing, creating a timeline you can discuss with your prescriber.

GLP Trackr is a tracking and journaling tool — it is not a medical service and does not replace the advice of your prescriber, doctor, or midwife. Any decision about stopping, pausing, or continuing your medication around pregnancy must be made with your healthcare professional. If you have questions about other medicines alongside Mounjaro, our page on taking antibiotics while on Mounjaro may also be relevant.

Want to keep a reliable record of your doses and health markers in one place? Download GLP Trackr on the App Store or Google Play — there is a free 7-day trial so you can explore all the tracking features before committing.