Saying intrusive thoughts out load

I don’t really wanna go into detail about what it’s about cause I feel like it’s super embarrassing, but there’s this one specific type of intrusive thought I get that I struggle extremely with ignoring/sitting in discomfort with. Does anyone have tips for managing something like this?

I have a lot of thoughts about the universe, and they’re overwhelming—like being caught in a rip current, except it’s all inside my head. Most of the time, they’re about how small we are, how there really isn’t a “we” because our bodies aren’t truly ours—we’re just bacteria, cells, and microbes. The thoughts spiral, deeper and deeper, smaller and smaller, coiling until suddenly, I’m pulled under, drowning in a whirlpool. I’ve never felt like this before, and I’m convinced I’ve been faking it somehow. For the past few weeks, my OCD has been worse than it’s ever been in my 20 years of life. Or maybe I’m just more aware of it now. Has anyone else had their OCD suddenly get really bad? Does it ever end—if it even can? I’ve convinced myself that my intrusive thoughts aren’t actually intrusive, that my OCD is a choice, and that everything I do is intentional. As for compulsions, I don’t have the typical “If I don’t do ____ then ____ will happen” kind of thoughts. Instead, my brain simply commands, “Do ____,” and I always give in. It’s so loud in my head, and I can’t shake the feeling that I’m an imposter. Like I don’t belong here—like my presence on this app is an intrusion, invalidating everyone else’s struggles just by downloading it and daring to post. If anyone feels that way, if you think I’m intruding, I’m sorry. I only came here because I have no one to share my diagnosis with. Pouring my thoughts out, hoping someone might understand, feels less suffocating than journaling. Journaling is like letting a wound fester—each word burying the thoughts deeper, leaving them to decay in silence, for nobody to ever read but myself.

I have the thought of what if I lose control and do something out of my control like scream for no reason or yelling in a store or just blurting stuff out that’s not in my control and it causes so much anxiety and causes me to feel weird. I always think I’m on the edge of losing control of myself and it’s exhausting living like this. Any tips?