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finished my antibiotics today, Could I be pregnant?

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Im on birth control and have been back on it for about 3 months now. I just finished my antibiotics today, I was taking them for vaginitis. And I had unprotected sex multiple times while on them. I took my last pill Monday and haven't gotten my period yet, but I have seen stringy blood flesh looking things come out in my pee a few days ago and today when I wiped there would be mucus mixed with blood and some stringy. But not enough blood to bleed onto a pad. What does this mean? Could I be pregnant?

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replied January 13th, 2012
Menstruation Answer A30357
Welcome to ehealthforum.
Antibiotic use along with use of hormonal birth control pills is known to reduce the efficacy of the hormonal birth control pills. The effects of the antibiotic are known to persist for atleast 10 days after you take your last antibiotic dosage. Wait and watch for your periods or observe your current bleeding. Look out for development of any other new symptoms if pregnancy is suspected. If periods do not start within 10 days of expected period dates, or if you get abnormal periods, or if you suspect chances of pregnancy, consider visiting your doctor/gynecologist at the earliest for thorough examination (to confirm pregnancy related changes/signs in body) and blood/serum HCG level test (to confirm/rule out pregnancy accurately). Be in regular monitoring and follow-up with your treating doctor/gynecologist and report any new/abnormal symptoms immediately. Take adequate rest. Drink plenty of water. Maintain healthy diet. Stop the birth control use if you suspect chances of pregnancy or if pregnancy gets confirmed.
Take care.

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