With the number of comments on this post, I doubt anyone will read this, much less the OP, but I feel compelled to say:
GO TO THE FUCKING DOCTOR!!!
If you're noticing something wrong or different with your body, go to the doctor to rule out something medical. Then continue your investigation. A doctor wouldn't try to diagnose you based on what you've written in your original post, so I wouldn't weight too heavily the opinions of a bunch of NON-DOCTORS with zero skin in the game.
I don't mean to be alarmist and I have no idea what the likelihood is, but one thing you didn't list as a possible cause is something that has changed in your brain. When I was 32 I started noticing an increase in typing mistakes and having some cognitive trouble. Later that year I had a seizure, got an MRI, and found out I had a brain tumor.
You're probably fine, but in addition to asking HN I'd recommend asking a doctor. After having surgery to remove the cancer, I also got a cognitive psych eval (several hours of testing) to establish a baseline. They were able to estimate the degree of decline I'd experienced due to surgery.
GO TO THE FUCKING DOCTOR!!!
If you're noticing something wrong or different with your body, go to the doctor to rule out something medical. Then continue your investigation. A doctor wouldn't try to diagnose you based on what you've written in your original post, so I wouldn't weight too heavily the opinions of a bunch of NON-DOCTORS with zero skin in the game.