Our expert says:
Sperm may remain viable in the female genital tact for up to 7 days but more commonly up to 5 days. It is therefore possible but unlikely that day-8 coitus may result in the conception if ovulation occurs from day-14 onwards. However it also extremely important to know exactly what stage ovulation occurred to be able to solve this mystery.
Answered by: Dr M.I. Cassim
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