That's completely normal. I have a really cool thing I found to help me track mine, it's an app. You put in things such as "how heavy was the flow" "how are you feeling" "Are you taking any medications" it's really great because it predicts them, and if you link it to your laptop, you can get discreet push notifications (days or weeks before!). Anyways, back to your question. You may cramp or suddenly start eating more- which is normal.
