Is it a delusion or reality
I heard that there was a personal injury accident just the other day. Then, at an unexpected moment, I can't concentrate on my studies because I only thought about strange things, such as whether I killed him, or pushed him from behind, or killed him indirectly. I'm scared because I don't know if it's a delusion or reality. And the more I think about it, the scarier it gets. Please give me some advice.
