Michael, my father found out he had one when he had a car accident (he blacked out so they did an MRI). I did some research on them and appearantly they aren't that uncommon. Most people who have them never know they do until they are testing for something else and they see it. Appearantly it doesn't do anything in most cases. But either way, hang in there and I wish the best for you.
You seem to be going through a bunch of crap between house and health so I hope you get some good news soon.