me and my girlfriend had sex protected with a condom yesterday, i ejaculated and everything was fine that time i then went for a wee afterwards then a few hours later i started doing sexual things to her but she didnt do anything to me, i thought i heard her say "put it in me" so i climbed on top of her with NO protection or anything my penis then rubbed against her vagina and up against her clitorus but i didn't penetrate, it nearly entered must of gone in about a cm in if that and it was only around her vaginal area for about 30 seconds because i thought its best i didnt as it could get her pregnant and i had precum on my penis and i didn't ejaculate at all, i wasn't close to it, what are the chances of her being pregnant and what do i do? im really worried please help me, thanks.