@Dreamy 

I can't quite easily imaging being around 800 people and not know anyone.  My first thought would have been 'surely no one would notice I wasn't here.'

It sounds like the stuff of nightmares to me!  I'm glad you got through it, but those cramps sound so annoying.  I get them in the legs now.  My potassium and magnesium levels are low as well.  Vitamin D and B12 as well, and some other ones I forget.  It's getting hard to keep track of it all.  I feel like the periodic table of deficincies!