I am a 25 year old woman with an extreemly normal period. By that I mean it comes on the 29th day of every cycle and always lasts for 5 days. My last period however, came 3 days late and only lasted for 3 days. The bleeding in these three days was very lite. Now it has been almost two weeks and I am experiencing cramps. I took a pregnancy test and it came back negative. Also concerning my last period...it came thurs but was a brownish color, fri was more of a normal color but much lighter then usual, friday night and sat period gone.....sunday light bleeding a pinkish clear. Any one have any idea????