I started getting my periods at the age of 12 and it has been severely painful since then. I feel very nauseous and sometimes even weak like dead. I also fell unconscious during my previous period. I have also started getting severe lower back cramps from a few months. I have consulted many doctors and no medicine gives me any relief. Please help me. Few common medicines I have tried and which have not worked - ? Meftal Spas ? Hifenac SR ? Cyclopam.