I have been off an on my birth control pills for about 5 months...I recently began taking them again only I have missed some so I take two to catch up. I have been having unprotected sex, and just recently wiped an noticed some light bleeding but it did not continue after that day. I should be starting my period in two weeks, and so scared that I may be pregnant...does anyone know if you could know that soon or if that is a sign?