When I was first doing the Naked Amps for Axe-Fx III (which took several months, and I was unemployed at the time so it was constant/daily), started get dizzy after lying down and then getting out of bed, and get these bouts of unexplained vertigo. Turns out as you are there are little tiny crystals that can form in your ear , but they break up over time and it all went away thankfully. Not tintinitus, but it was very disconcerting.
Take care of your ears! Wear good ear plugs if you are playing live and loud over substantial periods of time.