you cannot get pregnant like this because when millions of sperms are released in vagina then a woman get pregnant, because the probability is too low and also sperms cannot live outside for too long,but i know these facts will not help you
because you have ocd, ur brain will again lead to some other possibility , so its better u consult a psychiatrist , because you need medication to control ocd
I've a read a couple of questions on here, but I didn't find one I relate to at this moment. Thanks again.