No you didn't do anything wrong or commit any crime. Its your computer and its up to you if you want to touch it whatever is on or not on your hands.

I think the ocd is getting you to read far to much into things that others wouldn't even think about.

This form of ocd is so common, I have had it myself. Now I just tell myself that 'its just a thought' and thoughts cannot hurt anyone, nor can body twitches or sensations.