I am 17 years old. Since I have started my period, i have had lower right abdominal ache, lower back ache, excessive gas, and bad aching in both hips. Also, my hand and legs are also aching. Even when i don't have my period, i have been having unusual lower right abdominal pain. These are different symptoms than i have ever had, and am fairly worried. I know it is unlikely ovarian cancer, because of my age, but was wondering if anyone knows what it could be. Thank You