Ocd thoughts as a newbie

Hello! I'm new here and new to OCD. My therapist suggested I might have OCD due to my tendency to ruminate endlessly on doubts and fears. These thoughts are indeed intrusive and I can't seem to stop them. The thing I'm kind of stuck on is that I can't see where the compulsions come in. Unless the thoughts themselves are compulsions. Can anyone relate to this?

I’m so tired of my OCD changing “themes.” And no matter what it changes to, it’s always directed towards a specific person - my mom. My mom and I are very close. I consider her my best friend and we live together. I can share anything with her and she’s very supportive. I’m 32 now, but harm ocd started when I was 15 and she was the main target back then as well. I had a bad flare up this year and the harm thoughts came back, but about a week ago they turned into sexual thoughts. Graphic thoughts and images about incest. These thoughts typically make me feel panic and dread, and just an overall depressed feeling. It has made me uncomfortable to be around my mom, since I can’t even look at her without a sexual thought or image popping up. Even watching a romantic scene in a show, listening a romantic song, etc. My brain wants to put an image of her in my head. Even me fantasizing about a man that I’m attracted to will replace the man with my mom. They just keep popping up. So this of course makes me think I actually want these things, and are actually fantasies. I have started to wonder if I’m in actual denial or that these are my true feelings. I have never been a relationship before due to not having much interest in it plus my mental health issues started as a teen, but someday I would like to get married. But now I’m thinking maybe I’ve never pursued a relationship with someone else because I’m actually in love with my mom and want to be with her, but I can’t so I’m just suppressing my feelings. And I do love my mom, but I question myself is this just platonic or familial love? Also questioning our relationship in general now - is it unhealthy or too dependent? It makes me feel doubt, since I have never really been in love before with someone else so I have nothing to compare it to. Always just crushes or finding a man attractive, and I identify as straight. But I also have not thought of my mom in a sexual way before, so I’m hoping this is just my OCD acting up. Even thinking about a future relationship with a man is making me feel nervous, since I think if I have feelings for my mom, will I ever be able to be in a serious relationship someday? If I’m with someone will I actually just picture her? It makes me feel hopeless, like I can’t help how I feel and what if these things are true? Would I act on them? My brain even made me think, “you want to ask your mom to be in a sexual relationship with you and/or want her to ask you.” I feel like such a pervert for writing that, like a truly disgusting person. I know I don’t want these things to be true, but what if they are and I can’t help how I feel? Again just feel doubt and uncertainty, that I’m in denial, and not to mention just feeling like a very sick individual.

I am starting to come to grips with intrusive thoughts, reading how your brain will think of the worst thing / or make you think of something that really distresses you. BUT, I’ve got something I need to get off my chest, not looking for reassurance but just to know I’m not alone I guess? I remember one time, I saw a girl I follow on Instagram go on a marathon, and then went straight out for dinner after without showering and I had the passing thought of, gosh she must smell, even worse, she must smell down there. That has got to be the worst intrusive thought EVER, and because it affected me so much, I have the urge to think of this horrible horrible thought most times I look at people. Wondering if they smell!!!! It’s disgusting!!!! :( I don’t know if this is because I also have contamination ocd and I do obsess about feeling and being clean.