Hi bpcyclist
I too can relate. I have OCD and I count everything: tiles, steps, heart rate, breathing rate. Not only do I count, I memorize number plates. I also touch type in the air, or on the table when I'm thinking. My brain creates shapes and angles on the ceilings and the walls and I'm always measuring these. I rhythmically tap out fourths with my fingers. I could go on...
I obsess about counting, etc. but, I'm not worried that anything bad is going to happen if I hit a certain number, etc.
You're not alone. LTLTR.