I'm a 25 year old woman IV got peroid like cramps pain both my sides and n my lower back feelin sick and dizzy and got bad headache want can it be?

Many things. You could be having a urine / kidney infection, a kidney stone, infection of uterus, bowel infection like diverticulits, appendicitis ...Several possiblities. You should see a doctor and be evaluated it could be something more serious.