Okay, so 3 days back I gave my boyfriend a blow job. I swallowed then went to the bathroom to brush my teeth. I came bake kissed him then went back to cuddling, he decided to pull down my pants and rub his against mine and put the tip in for a couple seconds, then I thought it was a bad idea and pulled away from him and he understood why. He did NOT clean his penis off before putting the tip in. What is my chances of being pregnant. ALSO I am on birth control have not missed a pill but I have missed the regular time by up to 4 hours.