cat vomits

I have a 10 yr old Siamese. For about a year she has been throwing up. It is huge dinner plate size pools of liquid sometimes clear and sometimes with food. She always throws up dry food so I have started boiling chicken for her and chopping it upI  This seems to help some .I have been to 3 vets and spent about $1500 and still no clue what is wrong. No parasites, no thyroid, ect. She had lost so much weight she was literately skin and bones but has gained a good amount of it back. Sometimes she has a lot of diarrhea with what looks like chunks of undigested food. Sometimes it is mushy and looks like mustard. Sometimes bloody stool. If it was cancer I think she would be dead by now. I am leaning toward IBC. I may be losing my job soon so move vet is not an option. All ideas welcome.

[opus88]

hi...sorry to read abt your kitty, glad you had some of the causes eliminated....sounds very much like it could be IBD. the boiled chicken is a good idea for abit of time, easier to digest...btw dry food is NOT an option!!!
I will send you an excellent website with info on IBD. boiling the chicken is not the best way to prepare it, boiling causes too much nutrient loss....try baking it instead.
the website gives instructions on making your own food, however its for a raw diet which is best for IBD cats...however you can still make a homemade COOKED diet minus the bones..but you must ADD all the nutrients that kitty needs with this or kitty will soon become ill with other health issues. if you are interested in learning how to make a cooked diet and all the supplements you need I can help, let me know.
otherwise slowly start to feed a good commercial canned food with NO grains, the Vet on the site give names of these good canned foods......alot of reading here for you to learn how to help your kitty:))

http://www.catinfo.org/#Inflammatory_Bowel_Disease_%28IBD%29