Toothache When Using Cordless Phone I Have Toothache, Why Does It Hurt More When I Lower Myself?

I have toothache, why does it hurt more when I lower myself? - toothache when using cordless phone

I have tried to take a bath, but had to leave after fifteen minutes because the toothache was so bad. I noticed that when I'm sitting showers, and then disappears when I get up, as when I left the tank.

He introduced the theory that it may have something to do with air pressure, but surely this mean that if I stood on the ground, would be worse if I go to the top Saturday, but would not be the case. Why?