I have a 9 month old bully female who since Thursday has had episodes of vomiting and since Sunday has had a lot of rectal bleeding. Have been to vet several times. He did X-rays which were negative and bloodwork ( no results yet) a snap parvovirus test which was negative also. She is playful and drinking and wants to eat but after eating vomits anywhere from 10 mins to 8 hours later. She is also at the end of her heat. Has anyone had experience with this? Vet is talking about doing surgery to run the intestine if we can't resolve the issue soon. I am beyond worried. Any advice would be appreciated.Thanks!