Uncomfortible feeling for sure! I have had fluid in both inner ears a few years ago. I was extremely dizzy and didn't know why. The ENT didn't find it as he only used an otoscope when looking in my ear. He found no moisture on the eardrum so didn't look further. It was not until I went to my allergist who used a tympanagram that it was discovered and diagnosed. Took a bit of time to get the fluid out:(
I can see how that could feel like your description. But, I never had inner ear issues. I feel like I swallowed a bucket of oil laced with fire sometimes, but since I've changed my diet, it has gone away.