So a little over a month ago I took a pregnancy test that came back positive. (I was 11 days late starting AF) I had already scheduled a blood test the next day at my OB/gyn. I went to get my blood pregnancy test done and heard back later that it was negative. 3days later I had what I thought was a period. No cramps just bright red blood. After this period, about a week later I had what looked to be brown tissue in the toilet after went to the bathroom. But just kept of trucking along with my life because I had already had what I thought to be a period. A few days ago (4 days before I was supposed to start I started my period. This time I had cramps (mild) but with dime sized blood clots. I just thought this was the first day of my period so it was normal but it is now been 3 days still with dime sized clots coming out. Also I feel like I have a air bubble in my lower abdomen that doesn't feel bloated because it's too consolidated to my uterus area but doesn't hurt. It doesn't feel like gas either. I was checked last week for a UTI but that was negative. Can anyone tell me what you think happened or is going on.