My LMP was on march 18th 2009. But on april 1,2,3 there was a light discharge. it was not not like my regular periods. during first week of May i was feeling very sleepy and tired. Also was having severe back pain. On the 8th May 2009 I started bleeding. IS this my periods or did I concieve. I always get my periods in a 28 days cycle only. So I am confused whether this is my periods or did I concieve. Also I am having severe lower abdomen pain.