Also that every woman ovulate different too. She could start to ovulate 3 days before the end of her period....this is why I said depending on what day she is on her period and when having unprotected sex! You can Google all information given by kitkat1306 and myself to confirm! Best of luck!
Can I just correct what information have and say that this is COMPLETELY WRONG. Bleeding does NOT kill sperm and the reason a girl is unlikely to get pregnant when on her period is because she has already previously ovulated and you need to be ovulating to conceive.
Doesn't matter how much of your penis when in, or for how long, or whether you ejaculated or not. What you did can cause pregnancy. Just by being around the male releases pre ejaculation which can cause pregnancy. This is why you are supposed to wear a condom whenever they is going to be any kind of genital to genital contact.
All you can is wait until her next period is due, and if it doesn't show then have her take a pregnancy test with first morning urine. Please in future wear a condom at all times. Not only does it protect against pregnancy but STDs as well.
Couple of things:first- sperm is in pre-c u m second- sperm can live up to 7days in the uterus and last but not least- depends on what day of the period cycle is was on! There is always a chance to get a woman pregnant when you do not use protection even if she is on her period. Due to the above reasons. The only way to know for sure if she is pregnant or not is to wait and see if she misses her period and then do a hpt if she does miss it!
Uhm , most likely not . If she was bleeding sperm will like die , that's why girls on there period cannot get prego .