Question??

Okay, so Friday I started spitting brown stuff but I'm not suppose to start my period for another 19 days, I just got off of my cycle last Sunday! I checked last night and I wasn't spotting no more! Glow says that I'm ovulating till Tommorrow, I had sex last night but started bleeding somewhat heavy today.... I have 2 questions. 1: could I still get pregnant while exsperiencin this bleeding? 2: why am I doing this?? Please someone let me know something! I'm trying to conceive and it said I had a 33% chance of getting pregnant last night! Did I just blow my chance?