Headaches, nausea, and lack of energy. Last period in november but negative pregnant test!

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).