Anyone purposely keep thinking about their intrusive thoughts? It's like my brain wants me to forget it but then I keep purposely remembering it?

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?

I don’t know how to deal with the thoughts that come and barely gone. Usually, the brain often remembers and forgets things. People with OCD however struggle with trying to forget the intrusive thoughts because of the imbalance trying to convey what is real and if the thoughts in your head will come true. Just for the past few days, I was having fun and suddenly hit with a wave of obsessive thoughts and making me stuck with nowhere to go.

I have been ruminating on why I have been having intrusive thoughts on a specific topic. Anyone know why? Where do they come from? It freaks me out and makes me think that it came from a real memory (I struggle with false memory OCD)