Aerrica!!!!!!!! There you are, girl!!! I'm so glad to see you, I've been worried since the update, and I've been thinking of you - hoping to hear you've found out what is wrong.
I really hope they find a definitive answer. The artery issue is concerning. You know that "buzzing" or "radio" sound you used to hear sometimes (the ghostly thing)? Did it ever sound like it was coming from inside your head? I know that sounds weird, but sometimes when things are wrong w/ our vessels, they may press on parts of our ears or whatnot - and perhaps cause a buzzing noise or whatever. In any case, if you think it's at all related, you might mention it to your doc - to confuse things even more.
Anyway, keep us posted when you can. I so hope you feel better soon. Hugs to you, the Poopanut and The Boss!!