Late period on Ozempic, Wegovy or Zepbound? Here are the possible reasons, why a pregnancy test comes first, and when to see your doctor.
A late period can be a stressful surprise. Here’s how to work through it calmly.
| Possible cause | Why it can delay a period |
|---|---|
| Fast weight loss or eating very little | Can disrupt ovulation |
| Stress or illness | Can delay ovulation |
| Perimenopause | Cycles often become irregular in your 40s |
| PCOS changes | Cycles may shift as insulin resistance changes |
| Birth control changes | Starting or stopping hormones affects bleeding |
| Thyroid problems | Can affect cycles. Your doctor can test |
Mia, 29, was 10 days late four months into Ozempic. Her test was negative twice. She’d lost weight quickly and had been eating very little. Her period came 2 weeks late. She started logging meals and her cycle, and her doctor suggested eating more regularly and checking again if the next cycle was late.
Log start dates, flow, and any tests you take. Two or three cycles of data tell your doctor far more than a single late period.
Late periods aren’t a listed side effect, but weight change and eating less can affect cycles.
Take a pregnancy test and call your prescriber if it’s positive. Don’t stop without advice otherwise.
In your 40s, perimenopause often causes irregular cycles. Your doctor can help.