Natanni:
Amoxi is one of the antibiotics many of us take before dentals and other procedures. You need to take amoxi (or any antibiotic) longer than just 48 hours to notice appreciable results.
Sudafed is one drug I don't keep on hand. It's a decongestant and decongestants can cause cardiac reactions.
I would contact my doctor.
BTW, there's a fairly new veterinary injectible antibiotic called Convenia. One injection lasts about 2-3 weeks. It's cefovecin sodium, a cephalasporin, and is amazing. I had been hearing about it for months, then one of my cats got an oral infection. This can be given subcutaneously.
Surely there's something like this in human medicine. A shot is quicker-acting and when you've got a stopped-up ear, you need help PDQ. Then your husband can work on preventing a recurrence of the mechanisms that created the plugged ear.
Good luck. I've had those ear problems and they're not fun.