Does anyone have any tips on how to feel more comfortable telling your therapist things and how to not feel too nervous to tell him/her everything about your ocd?

I am wanting to go to therapy to hopefully lower my OCD symptoms but I am terrified to tell anyone else, like a therapist, about my intrusive thoughts. Has anyone else had this experience and if so how did you get over it?

My therapist isn’t specialized in OCD. I’m her first OCD client. She told me she’s taking courses in ERP and specifically sexual OCD since a lot of my themes are sexual in nature. I want help, I need help. It feels like every time I meet with her I get set back. I make progress a lot on my own. Sitting with discomfort, trying to accept the thoughts and uncertainty. But every single time I meet with her, it feels like I’m explaining OCD to her. She even went as far as to suggest that some of my thoughts that bring me distress are mine. I am not a cheater. They are not mine. Why on earth would they not be intrusive if I was in tears about having this thought? I feel bad. I really do because I can see that even though I can very much see her mistakes, I can also see that she’s trying to help me. I’m just so scared of getting worse. I’ve been in therapy for 5 weeks now. I feel like had it been with a specialist, I would be doing so much better. Instead it takes me days to come backs to whatever progress I’ve made alone after meeting with her. She’s a great person, she tells me she experiences intrusive thoughts too and she doesn’t have OCD which helps me feel less alone but I don’t think that’s enough for me. She’s always available for a call whenever I’m in extreme panic. I just don’t think this is working. I trust her and I tell her everything, but it feels like she’s just listening to me talk the whole time. We’re doing a workbook but she gives me absolutely 0 input. I just read my replies and she just sits there. I don’t understand the point in that. I feel so anxious right now. She wants me to get properly evaluated for anything that may be going on because on top of the severe OCD, I was also diagnosed with PMDD, GAD, and MDD by my primary care doctor but I guess she doesn’t trust those diagnoses? My psychiatrist also told me I have ADHD, which I’ve suspected my whole life but it sounds like my therapist doesn’t know how to handle OCD much less OCD, MDD, GAD, PMDD, and ADHD. She’s questioning the validity of my diagnoses instead of helping me figure out how to deal with all of it. This is so suffocatingly difficult. I’m also a huge people pleaser so how on earth do I end this thing?

Im 21 years old, I had ocd seen I was 14 when it started it stopped me from telling anyone I have it. It was really bad at the time and I had no clue how to deal with it I even was able to kill myself at one point but decided to have hope it would get better. In time it did got better but I had no clue what was wrong with me and I didn't want to tell anyone. Until this year I finally found out what it was and my ocd started getting bad again but I'm doing better now. Is been 7 years but I really want my mom to know what I been through but I feel like if I tell her it hurt her and I feel bad for not telling her when it started. I just need same help getting the courage to tell her.