I am diagnosed with Pure-O OCD and can relate to the constant fear. It's terrible and difficult to explain to someone. It sucks and sometimes I had to go home from work because the ruminating overwhelmed. I've had coworkers notice that I seem very distracted and take it personally until I tell them what's going on. The fears ranged from being an imposter to various other health concerns that weren't related to work in the least.

I'm currently seeing a psychiatrist and taking medication for my OCD and have explained my conditions to my higher ups so they would have a better understanding. I also started seeing a cognitive behavioral psychiatrist who had me doing exposure therapy to reduce my fear response to triggering stimuli. I've had significant improvements since i've started treatment, and now each day doesn't feel like the end of the world, but I still have moments of deep panic from time to time that are more manageable. I know you aren't seeking medical help which I completely respect, but I hope knowing that you aren't alone helps in some way.