Thanks, I did go see a doctor when I had the problem last week and I did, in fact, have my first ear infection of my entire life. I honestly think that the ear infection and any other physical conditions I've experienced are unrelated to the vertigo type feeling. It honestly feels like I AM feeling very minute quakes as you had described you've felt. That is exactly why I started checking USGS daily to see if any earthquakes were recorded of a minute size in the area. Usually there was a small quake quite some distance away and the times that I am feeling them are not the exact time as many of those quakes but very near the same time, within hours usually. I assumed that this meant there was activity moving all through the region and I probably do not feeling something very far away. February & March felt like a complete cluster of activity. Then when the verigo went away, I decided there was no more of this small activity. That proved to be correct until last week when it picked up again. The larger quake however did not lead to a cluster of activity again. So far, all seems quiet again on my equilibrium front. So, that doesn't sound like someone who is a sensitive, this sounds like a sensitive equilibrium only. Thanks for all the information.