If you think about a intrusive thought on purpose is that rumination?

Two things are happening: I get thoughts that just keep looping. They almost feel like song stuck in my head. Also, I’ll imagine something and I feel my stomach drop. Then as the seconds go by I keep getting fragments of the this thought but with different details. For example, it’s kinda like how a “vision” is portrayed. I’ll get a glimpse of the thought and then it’ll rapidly expand into something worse every few seconds. I don’t know if I’m causing this or if it’s just an automatic thing like any other intrusive thought. It feels unavoidable, idk if this is a compulsion or if it’s just another manifestation of an intrusive thought. Apart from that remembering an intrusive thought triggers the full thought again and then it just keeps looping or expanding. I don’t know how to stop any of this. Help?

OK, this might sound really dumb, but when you guys get intrusive thoughts, do they just come once and then go away? I’ve heard that repeatedly thinking about an intrusive thought is considered ‘checking,’ but it doesn’t feel like I have any control over how many times it comes up in my head. It’s not like I’m trying to check anything—it just keeps showing up, almost like it’s terrorizing me every time. I can’t seem to stop it from looping, stop remembering it, or prevent it from coming up. Every time it does, I feel horrified, and I already know it’s going to horrify me. I don’t think I’m actively trying to see if my feelings have changed, so is this still considered checking? How do other people get an intrusive thought and just move on? Doesn’t it pop up a million times for them too? I always thought that was normal, but now I’m hearing this could be a compulsion, and I feel really confused, scared, and lost. Is this why my OCD feels so extreme? Because I really don’t feel like I can control how many times the thought pops up.

Does confessing an intrusive thought just make it come back stronger?