I just had unprotected sex today is there a good chance i got pregnant?!

I just had unprotected sex today is there a good chance i got pregnant?

Well the thing is... me and my bf had sex for the first time ever we were both virgins i was a little embarrassed so i didn't let him see my vagina instead he had to try himself to put his penis in... well it took awhile till he finalii got it in.. there wasn't much penetration about 3 cm of it went in and only about a bit of thrusting... after about a minute he withdrew his penis and about 10seconds after just randomly started cumming... the enttire procedure took about 20minutes about 15 minutes of trying to get it in and about 5 minutes of it actualy being in there... i don't often get my periods about once every 2 and a half months and i had my periods about a week and a half ago... im sure he didn't *** in me and am only worried about the precum... can anyone determine the percentage of prenancy considering there wasn't much thrusting or penetration... only precum and that it didn't last very long..

well the thing is , you might very well be pregnant. precum contains quite a bit of sperm. more than enough to get u pregnant. since it was the first time for both of you, you have little idea what u were doing, how deep it actually went, and so on. and his control is definitely doubtful. i suggest the morning after pill, just to be on the safe side. buying a pregnancy test will not help, since it will show negative, no matter what for at least another 3 weeks. and then it will be too late.
just use condoms, OK?
they are cheap, safe and much less a pain in the **** than getting pregnant.