Drug for Menstrual Pain or Sengugut !

Menstrual Cramps or Sengugut is the most headache problem for Women in all age .It could disturb our mind , disturb our work and study .I am having mentrual cramps right now!! oww...it is a severe one! It made me can't focus during work and I sweat alot eventhough I was in Air-cond room . What should I do ? tablet Paracetamol 1000mg or just take the better one--mefenamic acid ?For "starter" , you