She hasn't had a season in a year? DId you see the vet about that? How old? A protrusion. Sounds like could be a polyp or could be a prolapsed uterus or something. It is not normal and not good and considered an emergency for something like that to happen. She needs to see a vet and you need to call immediately. Pick up her food and water. She probably will need an emergency spay. Hope that's about it and she's okay soon. Good Luck.