My cat has been having diarrhea and vomiting for at least 3 days now. He has mucous in his diarrhea. He is about 9 months old and has had all of his shots. We feed him Kibbles n Bits and have not changed his diet. We do have mushrooms growing in our backyard. Could he be eating those and that is what is making him sick? Can this be curable at home? Any help anyone can provide will be greatly appreciated as I do not have the money to take him to the Vet.