Hello~I would see your GP to have it checked, it could be a simple wart, hemorrhoid or possibly a polyp. Your doctor will be able to tell you exactly what it is and how to deal with it.
It could be a wart. People get warts there, hpv. It could also be a hemorrhoid. When is your next physical, ob/gyn check or well visit with a doctor? ask about it at that time. good luck