Well, I was with my girlfriend and I ejaculated, but not inside of her, but through oral sex. Afterwards i went to the toilet and urinated. I then went back and we had a very short sex session. It lasted for about 3 seconds (my penis in her vagina) and i did not ejaculate. She was on her period. I am sondering if this could have got her pregant, as i was not wearing a condom. Please help.