Hi. 4 days ago I had two cavities that needed filling. Up to now, I have a weird thing in my ear where it sounds like I hear the ocean or something. It's not ringing; just amplified hearing, or like a dull hollow hearing. It's not a sound. I know it had to do with the injections because they were a lot and it is from the ear on the side of where the injections were. Am I going to be okay? I'm worried. What is going on! This has never happened to me with dental work.