Ok so it's just illusions appears on you mind. and these thoughts became
compulsive in your mind.and it's repeting,
that's an OCD thought behavieri will repeat in your mind

cure
firest

Write down your obsessive thoughts (but keep it secratly i recomond a google sheet )

keep record of ever ocd thought(including same thoughts repeting) and how many
time it comes in a day your mind. you wakeup until go to bed

it give you a picture of what kind of thougts repeting,what thought is more common, what thought is rare

read your writing when you have time or i a mind relax time so it give you how fake are these OCD thoughts

second

teach you mind or ovrcome your mind

let's say ' you mind say blood and HIV infection thoughts- so now you teach you mind the FACTS that is "i dont have anycontact with blood"
this thought is just crazy not REAL and ignore is

train yourself it