Thank you guys for the support. I'm still scared for my little Boo because this noise he's making is just horrendous. The vet said to take him in right away if he has any shallow/labored breathing or is off his food. He just ate a few minutes ago and his breathing is normal.

I'm just scared that it isn't a URI and that there's something more sinister lurking. But I just didn't have the money for the xrays and blood work (app. 300 bucks) so I went with the antiobiotics and keeping a close eye on him.

I feel so horribly guilty everytime he coughs. Guilty that I brought Bettie into our home and guilty that I didn't have the money to give him all the tests necessary to come to a definitive answer. I wish I could help him in some way other than giving him pills.

Has anyone had a situation like this? What can I do for my poor little boy???