why is my pug drooling excessively, licking, and her abdomen swells after eating

[pjacob]

my pug is 8 years old. Up until about 3 years ago she was a healthy dog.  She developed food allergies to all poultry mixes (nothing with feathers). I have her on Orjen Regional Red dog food and ground lean beef meat. she had been doing fine up until about a year ago. she has episodes where after she (not every time) eats she starts to drool, lick, and her abdomen swells, She becomes restless and walks from room to room as if she is in pain and can't get comfortable. I took her to vet and they ran blood test.... her white blood cell count was slightly elevated and everything else looked good. she takes aboqueil (new allergy meds.) and I give her benadryl when she starts to drool and lick but something is definitely wrong. My vet wants me to have cushions disease blood test run on her (cost $250) but if it were cushions why doesn't she always drool, lick, and her belly swell. it doesn't make any sense. it happens only after she eats sometimes. please help me help my little girl.

[mfbrdb]

Not sure if you found your answer to your pugs problem, but you may want to read up on bloat.
Its usually not common in small dogs though..more the large deep chested breeds.  
Hope your baby is feeling better