Hello Kim,
As stated above it is possible but a very slim chance. If kept warm at body temperature (like on the skin), 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.
Nurse Hope
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