The chance is small but exist, when you do things like that take a shower after the encounter, and wash yourself, some people recomending a vinegar viganal douch, I dont see why not, if you do all the precaucions and you still get pregnan, I think the Lord wanted that child to come to the world do not abort him or her, send me an email I will adopt him or her. If you want to keep playing with your boyfriend in this way, put a condom on him, Godspeed..