The problem with CTE is most who suffer concussions never experience it. Just because you have had a number of concussions does not mean you will develop CTE.

It is EXTREMELY rare for CTE or CTE like cognitive problems to develop before the 40's.

You have a greater likelihood of developing Alzheimer's Disease. We all have that same risk except for the few who have a genetic predisposition for AD.

You need to learn to pick your battles.

If I said you had a 20% chance of developing CTE sometime in your life, What would you do differently ?

btw, That is hypothetical. Not a prediction.

But, OCD does increase your risk for mental health issues. That is a known issue. So, as I said before, get help with your OCD now so you do not have to live with that burden. OCD is a lousy way to live your life.