How do you not "have" or "do" a pure OCD compulsion? - it's a thought !

Been struggling with existential OCD lately. Very hard to describe the thoughts/feelings, but it is a constant feeling of being stuck in my head. Like what is consciousness and where do I think from? Like I think it’s OCD, maybe it is maybe it isn’t. But if it is, what would be good ERP exercises? Just existing (lol)? And what would be my response prevention? I’m not even sure what mental compulsions I may be doing.

Hi - just for some context, I have OCD and ADHD. I hate bringing this up, but with these diagnoses, when intertwined, there is ALWAYS a thought. I never stop thinking. This is really hard, especially because I feel like I always need to be talking to someone. Whether it’s my friends or family, talking to people brings me down to earth from certain kinds of thought spirals. However, when I’m alone it is the hardest. When my friends don’t reply I have this compulsion to text again or I need to constantly check my notifications so that I have none left to check. But then to them or new people I talk to, this behavior probably comes across as overwhelming or too much. I’m trying to control it and use erp, but also, I have my moments where I’m just vunerable and give into the compulsion. It’s genuinely so embarassing and maybe not as big a deal as I’m making it out to be but, how do I manage? And how do I relax?

So I've been working to address my OCD for about a month now. So far, I haven't been working on it with a therapist and have instead been trying to create my own exposure exercises. The primary obsession I'm working on is the fear that I'm somehow flawed or invalid on a fundamental level. The best way I can describe it it is that its similar to the feeling you get when you have germ OCD and you feel contaminated, except my whole existence and being feels contaminated, so to speak. I've identified a list of triggers, and a list of compulsions (pretty much all mental) that I've noticed myself performing. I started out by doing imaginal exposures and scripts where I'd write out triggering fictional scenarios and read them over and over, combined with mindfulness techniques to focus on my breath and bring myself back to the present when I noticed myself performing compulsions mentally. At first it worked to some extent, but eventually I started to feel like the stories I was writing about this obsession weren't triggering any anxiety anymore or a very low level. So I stopped reading them and focused solely on improving my ability to stay present and identifying compulsions as I perform them, and disengaging. Now, I'm at the point where it seems like my general anxiety levels throughout the day are lower, and the triggers I've identified are producing noticeably less anxiety. But that makes me wonder if somehow I'm just secretly doing mental compulsions without knowing it? Is only a month of rather disorganized and unstructured ERP enough to produce this much improvement? To avoid giving me re-assurance, I'd appreciate if you guys don't directly answer those questions, maybe just provide some possibilities or your own experiences so I can get a better idea of where I'm at. Any info would be appreciated. Thanks!