Hi,

I have been on birth control (28 day pills) since last October. Just last week I was supposed to have my period and I did starting on Wednesday but usually it lasts until Sunday. This past week it was over by Friday afternoon... I'm just scared because I had sex on Saturday night and though he did not cum inside me completely we did not use a condom until he was about to allowing for precum. The problem arises with the fact that sperm can live up to 5 days inside of the uterus. Also, I do not miss any pills or take them late - I am always on time.

Do you think that I may be pregnant or is a short period fairly normal on birth control even if it is not usually?