Do pregnancy test.: If you had unprotected sex without not using a reliable form of birth control then you could be pregnant. Spotting frequently occurs at the time of implantation, due to the disruption of the lining of the uterus by the zygote. If you are concerned about pregnancy, do a home pregnancy test, if it is negative and still no period, repeat test in 7 days. Another possibly is STD.
Answered 12/4/2014
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A doctor has provided 1 answer
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