He wasn't caughing or sneezing or acting any differently, just started breathing really funny. So we started to pack him up to drive to the emergency vet, but he went limp and was gone before we even got the doctor on the phone.
I know how YOU feel too. My girl I had only five weeks was fine when I put her to bed and breathing "funny" when I tried to get her UP. I knew she was going but it was sheer torture watching her die. There was NO time to get her to a vet either. I am so sorry for your loss.