I have a dog that has been vomiting off and on for 6 months. The vet treated him for worms and he is fine until the worming medicine is gone. Then he's vomiting again. Antibiotics and stomach pills are not helping. He had an elevated white blood count and his spleen is enlarged. The is now coughing and having a rough time breathing once in a while and is vomiting again. Mostly flem and water. He has ruined my new carpet and is bankrupting me with vet bills. Any suggestions?