Yes, go to your doctor again if his treatment hasn't cleared your problem. Have you had antibiotics by mouth? These tend not to work as well as antibiotic eardrops, acutally. You might need referral to the ENT Clinic so that your ear can be examined, a swab taken to see if there is any infection and if so what antibiotic would treat it best, and possibly have all the muck and gunge sucked out to clean the ear. You might have a perforated eardrum, or it could be an infection in the ear canal, so you should get it checked out. Most important is to keep your ear dry, and don't try to clean it with a cotton bud. Hope you get it sorted out.