BATHE DURING PERIOD?

I'm not trying to troll, this is just an honest question. I know we have to bathe during or menstral cycles, (duh) but is it REALLY ok to take a bath? My mom always told me when I was little that it's dirty to take a bath during your period. I guess it's because of all the blood and stuff that comes out when you bathe?? I don't know. But I do know that it relives cramps, so is there a cleaner way to take a bath? I've heard people wear tampons but that kind of takes away from the "cleaning" aspect.