I have been on my same birth control for about 4 years now. I don't take placebos so I no longer have periods. I take my pills almost perfectly, maybe missing one here and there but taking it the next morning. I have not missed a pill in a couple months now. About 10 days ago my boyfriend and I stupidly had unprotected sex, it was only like 5 minutes because we decided to stop, but today I've had a little brown discharge here and there. Of course I Googled and implantation spotting popped up and it made me a little nervous. Is there any chance?