Hi and welcome to HCM.
I see you are very concerned. I know it is hard to even thinkabout pregnancy
at your age, but first i need to say that possibility is extremly low. Especially considering his infertility
. As you said woman can get pregnant even if there wasnt ejaculation inside. You didnt tell me what period of your cycle was? if it was 10-15 days after menstruation
then there is a possibility of pregnancy(about 20%,if he is fertile). I suggest you to dwait are you gonna get next menstruation,if not,then do pregnancy test. I ll say nothing about abortion
. Wish you good health.