I never said you were a "bad dad." Sorry but you went from allergies to dysphagia to rabies, and now back to dysphagia again all within almost 24 hours and talking about saying "good-bye' already
without a definate diagnosis. A little difficult for me to comprehend.
If your dog has indeed only starting showing symptoms within the past 48 hours, you're catching this right at the beginning. Hopefully your vet has started treatment with meds such as Prednisone and you'll see improvement soon.