Vaginal Discharge

So this might be a little graphic, but I need some opinions. My boyfriend and I had sex twice Saturday evening back to back. We did use a condom and I am on birth control. I am to get my period next Thursday. Normally before my period I get some light brownish discharge (which is normal for me). Today I went to the bathroom to wipe, and I had a little bit of bloody discharge. I’m freaking out. I’ve never had this before. I don’t know if it’s from having sex this weekend or if it’s cause I’m about to get my period. I have never had bloody discharge before except when on my period, not before. Help a worried girl out! Lol