In the meantime, if you are seeing things get a health check.
I re- read Oliver Sacks' "An Anthropologist on Mars" last night, because of this thread. One of the cases was a young man who joined the Hare Krishna cult in the late 60s. He was one of their star converts, he gradually became more and more detatched, meditated constantly, and lost all desires. His eyesight also dimmed, which was interpreted as being replaced by his inner light. To cut the story short, it was eventually found that he had a grapefruit- sized brain tumour which had destroyed his sight centres, and worse still his ability to form memories. He never recovered either.