The Stuff of Nightmares
It’s weird enough to feel like your dreams can predict the future, but it’s especially upsetting if those dreams are actually nightmares. And it’s even more stressful if those nightmares occur when you’re a very young child. Well, actually, we’re not sure about that last part; something like that would be terrifying no matter how old you are.
After years of a recurring nightmare featuring a specific cemetery the OP had never seen before, he later happened to visit a cemetery with his family— and encountered the exact same cemetery from his nightmares. As a child, the OP found this experience so horrifying that their brain seemed to block out all further details of their visit to the cemetery.