Opinion | No, We Don’t Know if Coronavirus Vaccines Affect Periods – The New York Times

If so many things can affect periods, why don’t we know more about how these vaccines — or any others — affect menstruation? It’s part of a long history of medicine not taking women’s bodies seriously.

Clinical trials should track and document menstrual changes as they do other possible side effects. Like the fevers reported after the vaccines, a transient change in one’s period may not be bad for your overall health or have any lasting effects, but it’s still informative.