- Dr. Kate Clancy, a University of Illinois associate professor, said that she’d heard people had experienced changes in their menstruation since getting vaccinated
- Her tweet prompted other women to share changes to their own periods
- Several reported that they were bleeding more heavily and for longer than they had before getting the vaccine
- A few said they began menstruating in the middle of their cycles, days or weeks before they were supposed to
- Experts aren’t sure why some women might see changes to their periods, and so far there is not enough data to know whether it is connected to the vaccine
- A small study this year found that some participants saw changes to their menstruation after contracting the virus
By Carly Stern | 7 April 2021
DAILY MAIL — Several women say they have experienced heavier and more painful periods since getting the COVID-19 vaccine, with several also revealing that they have had breakthrough bleeding in the middle of a cycle after getting the shot.
Dr. Kate Clancy, an associate professor at the University of Illinois, tweeted in February that she’d been hearing talk of people who had experienced changes in their menstruation since getting one or two vaccine shots.
Her Twitter thread has prompted more women to share their menstrual concerns on Twitter, revealing their heavy flow, worsened cramps, and irregular timing — with one saying she spent 16 days bleeding after getting the Johnson & Johnson shot. […]