I think that this app has become a compulsion for me, unfortunately

Lists lists lists, bane of my life. Since I would say last 4 years any worry that pops in my mind I put down on the notes app on my phone then come back to it sometime. Is this OCD?

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?

New to this app. Do members find it helps, I'm worried I will start obsessing over things I hadn't thought about before when I read other people's OCD triggers...