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A 22-year-old female asked:

Took planb last month, had week of thick brown blood at irregular time. this month i had brief thick spotting 3 days ago, idk when to expect my period?

1 doctor answer2 doctors weighed in
Dr. John Munshower
Family Medicine 32 years experience
Plan B: These medications work through hormonal modulation and can alter the cycle. It may take some time to regulate your cycle back to normal. Best wishes.
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Last updated Jul 9, 2014

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