1 doctor weighed in:

If I am on the antiobiotic Bactrim, (sulfamethoxazole and trimethoprim) and am only on my first week of pills on my NEW pack, and had unprotected sex what are my chances of pregnancy?

1 doctor weighed in
Dr. Karen Dantin
Family Medicine

In brief: ?

Some antibiotics can decrease the effectiveness of oral contraceptives.
I would use an alternative form of birth control while on antibiotics.

In brief: ?

Some antibiotics can decrease the effectiveness of oral contraceptives.
I would use an alternative form of birth control while on antibiotics.
Dr. Karen Dantin
Dr. Karen Dantin
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