I also work on a farm and drink from a spring. And have experienced the nausea, dizziness, etc. for quite a while. but it's not really a physical ailment.
Hard to describe. I think some people's dna is resonating to new frequencies while other people's isn't. Sort of like an AM radio station will not pick up FM frequencies. DNA works like that too. I don't think it really matters where you are or what your life situation is, if you are sensitive to these frequencies.

Sometimes I literally feel like i am being used as a tuning fork between two vibrational realms. It's worst when the frequencies are very close to being in synch, but not quite.

Oh, and the name of the spring ? Twin Springs.
(Two realms. Water is the vector between the realms).