I just started taking bc for the first time about 5 days ago. I took it like the Dr. Said on the first sunday after I started. Then after only 2 pills my period stopped. Is this because of the birth control or could it be pregnancy? I had my period for a total of 3 days. I know birth control shortens periods but this fast only after 2 pills? Hmmmm kinda wondering what the deal is this being my first time on bc. It's also kinda scary because I did have unprotected sex prior to this period. Has this ever happened to any of you?