
As for tampons or some equivalent, it's called "on the rag" for a reason. There are times/cultures where rags were used, or also times where women just kinda bled freely. As for it effecting your character... just depends on your own discretion about how moody your character would be and her self-control/willpower? A woman's period certainly affects her state of mind, but it's different for all women, and doesn't like... turn any of us into axe-murderers.