Can you get pregnant if your boyfrieng pre ejaculated wiped it off and then stuck his finger in you?

If kept warm at body temperature (like on the skin or in a warm test tube), sperm remain motile for several hours. Inside the female reproductive tract, they can live for up to 7 days. Sperm are very sensitive to temperature and moisture and will eventually die outside the body, but since each ejaculate may contain as many as 750 million sperm, and it only takes one sperm to result in pregnancy, precautions are essential. Ejaculation anywhere near the vagina, without condom use, should be a reason to consider emergency contraception.