Yes. It is possible you to get pregnant if you have sex while you have your menstrual period (bleeding).

Ovulation is the release of an egg from the ovaries into the uterus and is the most fertile time for a female. Vaginal bleeding during ovulation is common and can be mistaken for a period. After ejaculation, sperm can survive for a few days inside the vagina or uterus even if there is bleeding. If ovulation occurs while sperm is still alive, pregnancy can occur.