Questions in the
Maternal and Child Health Forum
have been answered by
doctors from Henry Ford Health System.
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Subject: Re: antibiotics and birth control pills I took an antibiotic for a sinus infection (Bactrim) for ten days this month and did not use a back-up method of contraception although I did continue to take my birth control pills. It's now been 23 days since the start of my last period (I'm expecting it in five days) and I've been experiencing very tender breasts (especially in the nipple area), increased fatigue, and indigestion/heartburn when I lie down at night in the past four days or so. How likely is it that I became pregnant from having sex while taking this anitibiotic? I don't want to wait another five days to take a home pregnancy test!
______ Hi Erin. By now you probably have your answer. The signs you are experiencing can be pregnancy related, although it would be unlikely. The other thing to consider is whether these may be related to side effects of the antibiotic, an increase in caffeine, or other foods or drinks which may irritate your stomach. If you had a UTI your fatigue could be from your body's response to the infection as well. I also do not know how long you've been on the Pill because these may also be side effects of the Pill, especially in the first several months of use.
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