09/10/2026
Periods don’t have to arrive like clockwork or look exactly the same every month. But when something changes significantly—or keeps happening—it’s worth paying attention.
Hormonal changes, birth control, pregnancy, fibroids and other factors can all affect your cycle. The key is noticing what’s different from your normal.
If your periods suddenly become heavier, more painful or much more irregular—or you begin bleeding between periods—talk with your OB/GYN. They can help you understand what may be behind the change.