How To Avoid Cramps During Menstrual Period ?

i'm 17, and when my menstrual period begins i get severe pain in my lower abdomen. The pain is so bad that i can't do anything for the whole day, and taking ibuprofen has no effect. I also experience pain in my lower back and legs, i feel weak and get bad headaches. I also vomit and experience diarrheoa. This only lasts for 2 days. But what should i do?!