My period came on, on the 2nd & went off of the 6th then i had unprotected sex on the 9th then my period haf came on 2 weeks later but usually wen my period comes on its very painful & heavy but this time wen it had came on it was light & i barely noticed it. It was so light that i could where a pad all day if i wanted to but wen it had came on it was a week early then usual what does that mean? Now its the 4th and m period ( which usually starts on the 2nd hadnt came on)