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What eare some reasions for a shorter than normal menstral cycle?

4 doctors weighed in
Marianne DiNapoli
Obstetrics & Gynecology
3 doctors agree

In brief: Cycle or period?

If your most recent period was shorter than usual, it is possible you are pregnant and it was not a true period.
If you are referring to your actual cycle length being short (the time from the 1st day of 1 period to the 1st day of the next), "normal" is from 21-35 days. Change in diet or exercise and stress can affect your cycle. It is a good idea to visit a doctor who can evaluate the problem.

In brief: Cycle or period?

If your most recent period was shorter than usual, it is possible you are pregnant and it was not a true period.
If you are referring to your actual cycle length being short (the time from the 1st day of 1 period to the 1st day of the next), "normal" is from 21-35 days. Change in diet or exercise and stress can affect your cycle. It is a good idea to visit a doctor who can evaluate the problem.
Marianne DiNapoli
Marianne DiNapoli
Answer assisted by Marianne Di Napoli, Medical Student
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