Blind folk, how do you handle bathroom duties like wiping or periods when you can’t see?

I get that there’s bidets to which probably help a ton but was thinking about how does one know if they are clean? Or if they are a uterus owner, how do you know if your period has started or stopped, or if you’re experiencing any breakthrough bleeding? I guess the same concern would exist for any butthole owner… if you can’t monitor for persistent blood in stools, do you utilize different screening methods for various health concerns? Thanks in advance and hopefully I toed the line of being respectful yet curious.