Hopefully, you continued to take your birth control pills on a daily basis while on the antibiotic. Some antibiotics can decrease the effectiveness of your pills. Your intercourse was 6 days after the completion of your antibiotic, so the likelihood of pregnancy is low.
Keep in mind that things like stress, illness, and medications can alter your cycle, making it earlier, later or absent. If your period came late, there is no need for concern. If you have not gotten a period, take a pregnancy test now. If it is negative, continue your pills as usual. Your body may need a month or two to get back on track, and you should have a period during your next week of sugar pills.
5. January 2012
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