My last period started on April 17th. It lasted about 4 days which is normal with it starting out heavy with cramping the first day and gets lighter. This was very different. I had intercourse early Saturday morning and started bleeding shortly after but it wasnt heavy. Later that day i stopped bleeding but was still cramping. That night the bleeding started again a little heavier. Then i woke up Sunday morning and had hardly bled that night at all. I bled a little more on Sunday through the day but not much. Monday I did not bleed at all. I have never had this happen before. I have had unprotected sex more than once through the last month so I am getting a little nervous. I took a test before the "period" started and it was negative. I am still cramping, my breats are very sore still, very emotional, and tired lately! Could I be pregnant or is it just an irregular period?