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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Can Antibiotics ( For Sinus Infection) Affect The Effectiveness Of A Birth Control Pill?

Hi, I've been on Lo Loestrin FE for about 1.5 years or so. I have been taking my pills regularly, my husband and I had sex on Saturday, January 8th. I know I ovulate on or around the 9th, and then two days later (the 11th) I started antibiotics (amoxicillan or augmentin, not sure which) for a sinus infection. I know I will know in about a week or so anyways, but I was just wondering if taking antibiotics 3 days after sex, 2 days post ovulation could affect the effectiveness of the birth control? Possible to get pregnant that way or no?

Thanks!
Sat, 22 Feb 2014
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OBGYN,  's  Response
Hi, I understand your concerns . Antibiotics do reduce effectiveness of birth control pills. It will be helpful if you can tell me name of the exact antibiotic. You can get pregnant.
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Can Antibiotics ( For Sinus Infection) Affect The Effectiveness Of A Birth Control Pill?

Hi, I understand your concerns . Antibiotics do reduce effectiveness of birth control pills. It will be helpful if you can tell me name of the exact antibiotic. You can get pregnant.