See stuff when you close your eyes ?

If I get woken up in the middle of the night with anxiety and I try to go to sleep, it’s like I see visions when I close my eyes. Really quick, usually off the wall visions and going back to sleep seems impossible. It gets my anxiety even worse like something bad is gonna happen. I don’t really understand. I have been under a lot of stress lately, but I was getting good sleep before that.