Other than pregnancy, what causes a woman to have her period for only a day or two?

Question:

Answers:
Hormone imbalance, iron deficiency, thinner lining of the uterus.

I have next to know lining in my uterus, I only get my period about every 3months and only for a day or two.

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stress, diet..everything you do effects your period.
so if you've only had it for 2 days, don't worry about it.

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Stress
Poor diet
Too much exercise
Illness
And about a bazillion other random factors. If it is an isolated incident then it's probably not something to worry about. If it happens for a few periods in a row and you can't figure out any environmental factors you may want to call your doctor.

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