Hi everyone! I am a new frenchie owner to an amazing little 4 month old pup! About three weeks ago, he got his final vaccines to be up to date. A couple days later (I think) he started hacking up bile (white mucus looking). He has been doing it daily and it's worse at night when he has been laying down for a while. His nose is running too. I am making a guess that he has allergies and it's like a human when we are sick and the mucus drains into our throat when we lay down, but I am worried because it's been going on for almost three weeks now. The Vet did a fecal test. It was negative and gave him tow vaccines a week ago (Cerenia and Convenia) for vommiting. It didn't do a thing. Now I am starting Benadryl today to see if it's allergies. He hasn't been drinking water either so I put it in his wet dog food and give him ice cubes. I just want to know what's wrong with him. I feel so bad for him :-( Has this happened to anyone?? Thank you for your advice!