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A 26-year-old female asked:

started yaz (drospirenone and ethinyl estradiol) this month, not getting withdrawal bleeding after first cycle of pill. 4 days since last pill. what to do? could antibiotics be reason?

1 doctor answer1 doctor weighed in
Dr. Jeffrey Levine
Family Medicine 31 years experience
Unlikely: It is not uncommon for young women to miss there period for one or more cycles after starting combined low dose oral contraceptives. With very few exceptions, Antibiotics do not interfere with contraceptive effectiveness or menstrual cycles. However, emotional or physical stress (ie, illness) can alter your menstrual cycle, causing a missed period. Take Care!

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Last updated Jan 1, 2016
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