my friend and his girl had sex and they did it on what they said was the last day of her period, and someone had told me if you have sex while you are on your period there is a good chance that you could get an infection. and also my friend didnt use a condom for part of the time because he said he was sure that he was going to cum. he wanted to know if 1. if his girl could get an infection from doing this on her period 2. if there is a chance that she might get preganant 3. is it good to use a condom part of the time?
1. Having sex during your menstrual period does not cause infections. There is nothing unhealthy about having sex during your/her menstrual period. If the guy has an infection already - he can pass it onto the girl.
2. There is ALWAYS a chance she can get pregnant when you have sex. A woman can get pregnant 365 days a year - every single day. Having your menstrual period lowers your risk of pregnancy to almost zero- BUT NOT ZERO. There are many women who have gotten pregnant during their menstrual periods because they thought they were safe -they're not.
3. NO, it is not good to use a condom part of the time. Part of the time is next to useless- he needs to use it ALL of the time.
And the question you didn't ask.... should she go get a pregnancy test? 10 days after her period stops she should go get a pregnancy test - or wait to see if her next period starts on time.