What time during the month is a girl most likely to not get pregnant?

Hi there. A girl is most likely not to get pregnant during the time she is having her period. But unprotected sex at ANY TIME does always have a risk of pregnancy with it whether its a very low risk to very high risk (During your fertile period). The only chance of preventing pregnancy is by using a form of contraception and a condom. Take care of yourself and recommend me if I've helped you.