I need an answer please

Hello, I need help because I have something that is making me tired and extremely bad. I've had the rocd for about 5 months, everything I read and everything I do gives my thoughts a chance to sink even more for example I can come across a tweet from someone asking if they have an obsessive compulsive disorder and then when I look at the comments I see some people say that it does not look like it so I will try to find out if his story fits with mine and even when it is not my experience I will have a thought like "You could also have no disorder like this person" and I react like "oh my god if I don't have obsessive compulsive disorder that means my thoughts are true". Sometimes I get messages from super cool people and when I want to answer them I have a thought like "Don't answer you're going to cheat on your partner" so I reject this person and right after I'm going to have images in my head of him cheat and I'll think I can. Sometimes my head makes me repeat things that I don't want like assertions against my partner to destroy everything and I always repeat these sentences from morning to night for more than a month. I went to therapy for a few weeks and my psychologist made me the diagnosis hypothesis of rocd she is convinced that I have an obsessive compulsive disorder and even gave me the diagnosis thanks to her dsm-5 but she can not make the real diagnosis because she is not a doctor except that it gives additional strength to my thoughts it sounds like "It's a diagnostic hypothesis you have no problem". I'm really sorry to complain but I really need help I just want to hurt myself right now and I don't know what to do.