Why there is huge pain in my stomach and vomiting during periods always . in every month.

Painful periods: There are multiple options for painful periods. Hormonal treatments such as birth control pills, Progesterone treatments & the Mirena (levonorgestrel) iud are effective treatments that will help. There is also a drug called Lysteda that contains no hormones which will help others. Consider seeing an Obgyn for an evaluation to see if you have endometriosis.