H.M.
I would tend to agree baby may be teething. I've also had very good experience with chiropractic adjustment correcting ear infections in my kids. If he does have an infection, use warm garlic drops in his ears. slightly crush a garlic clove and put in a small (1/4) cup of olive oil. Warm this on the stove top(don't boil). Strain the garlic out and put a few drops of comfortably warm oil in his ear, about three times a day. this works well for any age.