I recently went to my PCP for some ear issues (vibration humming sound constantly in right ear). She said that the left ear is fine, but the right is indeed abnormal. She said there were three soap like bubbles on the ear drum and likely causing the vibration/humming . Can someone please elaborate on what this it? Is it fluid? Or just a bubble? I know I should have asked, but I realized as I was driving home. Any help would be fantastic. Thank you!!