Background: I feel stuff deeply, I over empathise. I am not squeamish per se, but if an image I have seen/read/heard about gets in my head, it literally haunts me for weeks .
So a teacher died in terrible circumstances at my child's school. He was long-term depressed and apparently set fire to himself on the school grounds (ot of hours). 
We were very upset, naturally; (the teacher was exceptional, he helped my child enormously through a diffuclt period, and was very spportive to me too.) There is other stuff too which makes it even more tragically sad.
That was a month ago. recently a 'friend' told me some details about the death which has devastated me, just when I was getting over the intial shock. I mean, the original circumstances were bad enough, ths has tipped me over the edge.
I can't stop crying now, the image she has described to me is totally in my head. It pops in uninvited. I feel totally haunted.
I can't talk to anyone as I don't want them to have this information going round their head too.
I tried to talk to my husband but he stopped me, anticipating it was info he didn't want to know.
I am not normally neurotic, I am very well balanced but this has so upset me.
What can i do to rid myself of this image?