I’m using a throwaway account and trying to keep personal details sparse to keep this as anonymous as possible. Also, despite my frustration with the situation, I’ll attempt to be as neutral as possible. My significant other was always “germ conscious”; clean hands, no shoes in the house, etc. Nothing over the top or alarming. However, over the years, there have been huge shifts in behavior and routine in regards to…
It was very hard at times and there was often hostility but it was always recognizable to me as a symptom of the disease and not an intrinsic quality of the person.
I met another person with OCD who didn't know they had it - 5 hrs of cleaning each day and they didn't know, they just knew things needed to be clean.
I strongly encourage you to do what you can to get to a diagnosis. What helped the person I was close to in the end was cognitive behavioral therapy and a lot of hard work, to get to a point where things were manageable.
Finally - the biggest mistake I made as a carer was not talking to others about it or recognizing and acknowledging the effect on me. Get support for yourself if nothing else.