I have been taking otc meds and they arent helping. my husband and i are actually trying to concieve and i have been off of birth control for a few years.
looked up your age 22...It sounds to me that you would likely benifit from birth controll pills, Even if not sexually active, the pill is often used to regulate cycles,,,Natch, you will need to see gyn for this so discuss the extreme pain..he may advise otc pain meds, or prescription ...however your going to have menses for a long time so masking symptoms w pain meds should be short term.
You need to get tests done to know why the pain is so bad...may be endometriosis , common in young women.
I wish you all the best.
C