L.F.
A home remedy that works wonders....
Use an equal mixture of apple cider vinegar and rubbing alcohol. Put a few drops in the ear at morning and at night. Should clear it up pretty quick. Make sure to use apple cider and not white vinegar though.
I had a horrible ear infection last spring that I went through 3 rounds of antibiotics for and finally my chiropractor told me about this and within 3 days it had cleared up. Good luck.