3 doctors weighed in:
What are the reasons of delayed menstrual period at 13?
3 doctors weighed in

Dr. James Ferguson
Pediatrics
1 doctor agrees
In brief: Varies
Some will not have their first cycle until 2.
5-3 years after nipple enlargement starts, so a 13 year old may just be delayed in starting. If she has started, often the first year or 2 there can be up to 90 days between cycles because they do not ovulate with each cycle.Discuss this with her doc to see if any testing is needed.

In brief: Varies
Some will not have their first cycle until 2.
5-3 years after nipple enlargement starts, so a 13 year old may just be delayed in starting. If she has started, often the first year or 2 there can be up to 90 days between cycles because they do not ovulate with each cycle.Discuss this with her doc to see if any testing is needed.
Dr. James Ferguson
Dr. James Ferguson
Thank
Dr. Jumnah Thanapathy
Obstetrics & Gynecology
In brief: Physiologocal
This can be mostly your body adapting to the hormones.
Other pathology and pregnancy must be excluded. Consult your pedi.

In brief: Physiologocal
This can be mostly your body adapting to the hormones.
Other pathology and pregnancy must be excluded. Consult your pedi.
Dr. Jumnah Thanapathy
Dr. Jumnah Thanapathy
Thank
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