S.G.
My son has had fluid trapped behind the ear drum. I think the doctor needs to do a tempanogram to detect that. For that the doctor has prescribed that he chew gum to work the fluid out. Both boys have had swimmers ear, which is the outer ear, not the inner ear, although the doctor should have seen it if that is what is was. For that we use antibiotic ear drops. It could also be molars growing in.