I have had this going on for quite a while now and I literally had tears reading this, knowing I'm not alone! And thanks for that quote above, I'm a Christian so a lot of my bad thoughts are related to that and I've been praying about it a lot.
I didn't realise it was OCD, I always say I used to have it because most of my symptoms have gone, I used to do a lot of routines which I haven't done in years but I guess it never fully goes away.