I'm 27 years old and have been on birth control pills since I was 14. You can normally set your watch to the exact time and day that I will start my period each month. This month, I should start this Thursday, 2/22. But I started last Sunday, 2/11, and have been menstruating since that day. Why have I started so early when I'm ALWAYS so regular?? This has never happened before. . .anyone have any ideas??
Thanks.