I have bladder, rectal, vaginal pains during menstruation. also left kidney pain&pelvic pain,blood clots,irregular periods,why?never had intercourse

Dysmenorrhea or: painful periods are not uncommon in young women and can be primary, not having an underlying cause, or secondary, related to infection or possible endometriosis. It is recommended to get a Gyne exam who may also recommend medication. Some women find that suppressing periods with hormones such as low dose birth control pills gives relief of pain, even though they do not need contraception.