At the past few weeks, when I'm sitting in the bus and the bus 'jumps' on a ramp or something similar and goes up and down, lets imagine the spine is only 2 'rods' that join in the middle - I feel like they hit one another \ collide and after that I feel for like half a minute that the spine is a 'rod' in the back of my back (instead of simply not feeling anything... how it's supposed to be).
This doesn't really hurt but it's a very unnatural feeling.
What can this be?
I have a few bulged discs at the bottom of the spine and I lately went to 2 appt. with a chiro that did 'adjustments'. Since those 'adjustments' this started (and other problems I wrote about in another thread).