I was 4 days late for my menstrual in march. It came later one night and left the next morning. After that my stomach begin to form and now is extra round. I have had plenty of symptoms. I have taken 5 test which are all negative. Menstrual hasn't started for this month and no symptoms showing its coming. My pulse literally beats out of my neck now. I've done research to see if its fibroids and I have none of those symptoms. This is stressful.