I have had painful periods. Period

I have had painful periods. Period pain is usually felt as painful muscle cramps in tummy. Moreover,together with lower back pain in some periods. my period pain usually starts when i bleeding begins. Sometimes, the pain makes it hard to do normal activities for a few days during each menstrual cycle. The first step for me is taking a pill of Ponstan. Ponstan is used to relieve the symptoms of period pain and treat heavy periods. The usual dose of PONSTAN is 2 capsules (500 mg) three times daily with meals. But i take a different dose. This may depend on my underweight.