I would love if someone would give me pointers. My cat is 13 years old prob 14. first off is he has been eating but not gaining any weight. he ran away two times. the first time he was under are house for two weeks when we finally got him out and in to the house we found a tick. we go it off of him and he seem fine. well maybe a few months later he was puking up foam for three days stright. After that he was fine but still not gaining any weight just gettig skinnyer. the seound time he ran away for 9 days we just got him back on sunday the 14. All i know is that he got in a fight with another cat but no cuts that we know of. Well he has been acting so werid lately not him self. he has been crying for two days straight now. Its more of off and on, he has been sleeping in his litter pans and having diarrhea. he has not been him self at all. I just want to know what is wrong with him and i dont have any money right now to take him to the vets yet.