If you accidentally had sex ( penis just slipped in for a second) what are the chances of getting pregnant? There was no ejaculation , I am on birth control (although not very consistent), and I got what I thought was my period 2 weeks after. The bleeding was dark for the most part, but I saw the lining part come out and there was a little bit of bright red bleeding. It lasted the normal length for my periodS, but my stomach has been feeling off for a few weeks. It s not time for my next period and I ve taken 4 pregnancy tests- all negative. I think I m psyching myself out and freaking out over this but I wanted to put this out there and see what others thought.