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can losing your virginity cause your cycle to change?

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I am a teenage girl. Last month I lost my virginity. About 2 weeks later my period came, but it was a tad late and longer than usual(like almost a week longer). There was also a brownish discharge before my period started, but that has happened before (this caused me not to know when my period actually started). Plus my period wasn't as heavy as normal. When we had sex the first time we used protection, but it was toward the end.

We had sex again, about a week before my next period was supposed to come. This time we used protection the whole time. Now my period is later than the one before, about 10 days late.

A friend of mine told me that after she lost her virginity her period skipped a whole month. I've also heard that stress can stall your period and cause it to come later. I'm just scared I might be an exception and I might be pregnant. So can losing your virginity cause your cycle to change?

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replied July 29th, 2011
Menstruation Answer A25527
Welcome to ehealthforum,
Losing virginity does not cause your periods to change. If periods are more than 10 days late, chances of pregnancy could be present. If you had not used protection right from the beginning of sexual contact, then chances of pre-cum/pre-ejaculatory fluid causing pregnancy (especially if you were during your fertile days at time of sexual contact) cannot be ruled out completely. Wait and watch for your next periods. If you suspect to be pregnant, look out for development of any other new symptoms suggestive of pregnancy. If you suspect pregnancy, or if periods do not start within 10 days of expected period dates, or if you have altered periods, consider visiting your doctor/gynecologist at the earliest for further examination (to confirm pregnancy related changes/signs in body) and blood/serum HCG level test (to confirm/rule out pregnancy accurately). Take adequate rest. Drink plenty of water. Maintain healthy diet.
Take care.

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