I need some help. A few days before my expected period I took a pregnancy test and it came back negative. I suspected that I either took it too early or I wasn't actually pregnant. For the past two weeks I experienced mild cramping, sore nipples, and mild nausea. Because the symptoms were mild I thought them to be PMS. When my period was 3 days late, I woke up that morning and went to the bathroom all of a sudden I get really bad abdominal pain. It on for only a few minutes so I didn't really think anything of it but it was the worst pain I felt. I took another test and it came back negative. Later that day I got light spotting and the next morning I got heavy bleeding. It lasted less than 3 days when my periods usu last 5 days. At the time I thought it was just my period but I brought itbup to my friend who said I could've had a miscarriage. so now I don't know whether it was a really heavy period or a miscarriage.