Horribel debilitating mentrual cramps in my lower abdomen and back and leg cramps so bad that it cause bowel problems and vomting?

You need GYN eval. to find out why sx's are so severe. NSAID’s, SSRI’s, hormone meds, OTC meds containing diuretics, warm bath, heating pad, exercise & acupuncture are excellent for PMS / period. Avoid caffeine, chocolate, alcohol & salt. Get GYN eval to R/O underlying pathology.Consider omega- 3 fatty acids, magnesium (supplementation or through diet) or Black Cohosh with dr ok. Sipping Chamomile can dissipate pain.