ANDY'S ANSWERS: This not likely your period starting. Wiping your bum a lot can certainly make it raw, but it's probably because your stool is too hard and dry. There are blood vessels near to the surface in your anal canal. If you are having a difficult time having a bowel movement (like being constipated) and your stool is quite hard and you have to push really hard, you might be tearing these blood vessels. Some people develop inflamed haemorrhoids, which can be quite painful as well as bleed.