So 4 days before my period was due I had sex with my boyfriend and I was tracking my cycle with this app so i could do it when i wasn't fertile or ovulating. this is the second time i've done it and we decided to do it "from the back" like doggy style kinda i guess and it was pretty rough so stuff was coming out in my discharge for a 3 days afterwards. Now my period is 5 days late and i just went to pee and i saw brownish blood in my underwear but after i wiped, nothing was on the toilet paper. (i put on a pad so now we wait) After i had sex I made him fill the condom with water and it didn't break and it wasn't leaking and i also didn't let him cum in me. Could i be pregnant?