I don't have that particular obsession, but the thing about OCD is that the specific obsession is somewhat arbitrary, while the underlying illness is very similar among people. So hopefully you can find a sense of resonance with other OCD sufferers even if they don't have that particular obsession.

One of mine is the need to equalize sensations on both sides of my body. If something presses against me on the right side, I have to try to press on my left side in the same place. I had this a lot more when I was a kid. It's mostly better with medication.

It's different than yours, but the underlying mechanism is probably the same for both you and me.

-Mike