HI.
Benedryl is not going to help so no need to take Benedryl.
You can certainly request your Doctor to change over to medicine like
Cefixime.
Feeling of something and swelling in the
esophagus can be due to GERD or
Acid Peptic disease.
I would advice you the following:
Zantac 12 hourly.
Pepcid every 3 to 4 hours when on empty stomach.
Add
Domperidone or such motility regulators.
Soft bland diet.
No aerated colas / soda/ drinks.
Early dinner. No late nights.
Treatment for anxiety (as prescribed / needs a prescription by your Doctor)
Lying in a reclining position
Walk around after dinner.
Think of the factors which increased the present problem, GERD, anxiety and try to avoid.
If no relief, get Upper GI
endoscopy done and get prescription for added Medicines.