We do have https://en.m.wikipedia.org/wiki/Boltzmann_brain That may appear every (10^10)^50 years according to https://en.m.wikipedia.org/wiki/Timeline_of_the_far_future
I had similar complains for the longer part of this year - turns out I had a chronic but mild bacterial infection. Get it checked. Other alternative: check for allergies.
We do have https://en.m.wikipedia.org/wiki/Boltzmann_brain That may appear every (10^10)^50 years according to https://en.m.wikipedia.org/wiki/Timeline_of_the_far_future
I had similar complains for the longer part of this year - turns out I had a chronic but mild bacterial infection. Get it checked. Other alternative: check for allergies.