Your symptoms suggest that you are experiencing the effects of prostaglandins
released just at the time of onset of a period and there on. To obtain relief, a combination of Mefenamic acid
, which has anti-prostaglandin effect and an anti-spasmodic to relieve the cramping pain has always been shown to be useful. The amount of blood flow is also lessened to some extent. If you do not find any relief, you may need further evaluation by a specialist and further management. Wish you good health.