Hormone imbalance: You may have high estrogen (e2) &/or low Progesterone (pg). The high e2/pg ratio causes a parasympathetic(pns)reaction in your autonomic nervous system. Pns causes contraction of your smooth muscle (cramps), stimulation of your GI system (n/v), dilitation of blood vessels ( headaches).
Answered 2/3/2015
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