I have primarily contamination OCD and I hate it. My main anxiety is coldsores; I'm terrified of getting one and spreading it around. I'm also freaked out about bathroom stuff too, so I hear you on that. The little cover things suck. I usually use layers of toilet paper arranged around the seat instead.

I hope that the people around you can be supportive and that you get through this tough time. I've got a single white bump on my inner lip the size of a pinhead that my wife is certain is not a coldsore but I'm in freak out mode myself right now