San Bernardino, CA
A 28-year-old female asked:
My little sister is 13 since she started her period at 12 theyve always been irregular she hadnt had a period in two months now she had it and its been 3 weeks ?
1 doctor answer • 3 doctors weighed in

Dr. (Liz)Phuong Trananswered
Family Medicine 37 years experience
Not to worry: The first couple of years of menarche is usually irregular . Some pts may be just few months to be irregular, other may be longer. I would wait till next year if she still have problems then bring her in to see doctor for evaluation.
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5.6k viewsReviewed >2 years ago
Last updated Oct 14, 2012
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