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Answers:    constriction of the blood supply to the endometruim.
when the lining sheds adjectives sorts of things are happening internally and can incentive cramping.

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when the uterus contracts too hard to push the bin liner out, cramps result. as the lining of the uterus tears and is pushed out

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Could these be symptoms of Polycystic Ovarian Syndrome or a hormone lack of correspondence?

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My period started off as it usually end, dark old looking blood. Is that normal or do I need help?

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I be merely on my cycle on January 31. It is very soon February 12 and I'm spotting again. Any suggestions?

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