<human>: Ok so here's the story. I had a uti, so I got five day antibiotics, and kept taking my birth control but me and my bf didn't have sex because I told him that antibiotics took down the effectiveness of birth control. Then I developed a yeast infection from the antibiotics so still no sex while finished the antibiotics. So for the past three days I haven't taken my birth control because my period is due to start next week so I just figured I would let it start early. Then tonight before bed I went to the bath room and had spotting. My bf didn't wanna have sex tonight because he doesn't wanna knock me up, we aren't ready for a baby yet (he's 24, I'm 20). So I just figured I would go down on him till he came as a stress reliever from work for him and a sorry we cant have sex thing. Then he demanded that I ride him. I said what if we get pregnant? He said whatever we'll deal with it. So we had sex and he came and all. So your thoughts on if I might have conceived our first child tonight Reddit??

Summarize the given text in a few sentences.
<bot>: My bf and I had sex tonight without any protection but my period started right before we did, how likely am I to have conceived??