Can prednisone alter your period? i was due to start today and have not started and have been taking prednisone for 3 days.

Yes: Prednisone is a stress hormone that can alter period. If your period still hasn't come in 1 week, get a home pregnancy test if the possibility exists.

Yes: Yes, Prednisone can cause you to miss or delay a period. The higher the Prednisone dose, the more likely to have a menstrual problem. This is rarely a problem at doses of Prednisone 10 mg per day or less.