If your urinary system and your reproductive system aren't connected...?
then why do you hold more fluid come out when you urinate during menstruation than normally?
Answers: Because hormones motivation you to retain water ( fluid ) contained by the pre-menstrual phase then hormones ( which own an effect on everything in the body ) explanation you to release when your period starts
One proposal could be you crave more caffeine which is a natural diuretic. instead of have ur period u pea