So, my period was 4 days late. Thought I was pregnant. Then It showed up. Very light just spotting day 1, then day 2 and 3 very heavy and for 2 hours the flow was unusual heavy, changing pad regularly..Plenty of clots, unusual too for me. Day 4 tappered off again. Had pelvic pressures and tummy ache. Now that there gone I still feel like I'm about to start again! What's going on..did read about vanising twin syndrome but don't know much about that, anyone experience that?