I need help. I usually have 33 day cycles and my AF lasts 7 days. In May I had a +OPK on CD 19 last month I kept checking until I ran out and I was always low. I started checking a few days B4 CD 19 and for a week after. This month I got AF on cycle day 26 a whole week early, which never happens. It only lasted 3 days also. At first I thought it was IB and I got excited since it happened with my first. But it got really heavy and there was clots but it was totally gone by day 3. This has never happened before. Does anyone know what this could possibly be or did anyone else experience anything like this? I had my yearly physical and gyno appt in June and I was in perfect health.