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A 52-year-old male asked:

My 13 year old daughter , started her periods in june for the first two month it lasted for 7 day but month it going on 3 weeks , is this ok or something to be worried out?

2 doctor answers2 doctors weighed in
Dr. James Ferguson
Pediatrics 48 years experience
Early cycles: Young women often do not ovulate much the first year of menses but the estrogen driving the changes will bring on cycles. Irregular flow cycles occurring from 2 to 10 weeks are occasionally seen. The longer intervals may trigger heavier or longer flow. Once they begin to ovulate on a regular basis (6 mo-1 yr)a 2nd hormone stabilizes the pattern.
Created for people with ongoing healthcare needs but benefits everyone.
Dr. Deborah Ungerleider
Pediatrics 38 years experience
Normal variation: Some girls have regular periods monthly right away, lasting 2-7 days, but it is very common to have irregular periods lasting longer or shorter than that. The flow amount can also vary a lot. This often happens for the first 2 years of having periods.
Created for people with ongoing healthcare needs but benefits everyone.
Last updated Aug 27, 2020


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