I have a promblem few days after my period i get pain on the right side that goes tru my hip. it makes me vomit.

Musculoskeletal: If pain were not one sided, the doctor might think of "mittleschmerz" or ovarian cyst. Probably is a right sacroiliac joint (sij) dysfunction due to ligament injury of right sij, the "hip" region. During menses an hormone is released called "relaxin". Relaxin is secreted during menses & pregnancy; loosening pelvic ligaments. Pain evocative of vomiting is severe. Sij injury is very painful.