Brown Blood/Could I be pregnant?

Hey girls- I need a little advice here. I’m on the pill for 3 years now and I always take it correctly. I got my period on Jan 31st. That night, my boyfriend and I had sex. He pulled out, but came on my...sorry TMI...outside vag/vag lips area. I immediately went in the shower to clean off and then peed after. My period ended around the 5th, but the 6th and 7th, I’ve had brown blood. I always get this prior to my period, but never after. I just went to pee now and there’s still brown (going into day 3 of it now). Is this just a normal after period thing here or could this be an early pregnancy? I’m 27 years old and been with my bf for 6 years. We want kids in a few years, but now is not the right time, so I’m hoping this is normal!! Any insight would be helpful! Thank you!!