So, me and my boyfriend decided to have sex. The first time we didn't use a condom, the second time we did. (All within 4 hours) for two days after I had dark brown discharge. Not sure if it was blood or not.. it was a little darker and thicker. Nothing happened for 2 days and now I have a creamier white discharge. I'm on birth control, but I missed one day last week, took it as directed from there. Now I'm on my lacebo pill and I still haven't started my period. Am I pregnant?