My dog is a peek-a-poo.. about 3 years old. He has recently started to have what seems like convultions.. its almost like he is gasping for are or like something is stuck in his throat.. but it has been getting worse and I'm very nervous for him.. I don't really have the money to take him to the vet right now.. can anyone tell me what is wrong with him amd what can I do to help stop the problem?