I do hope that you feel better soon and I am sorry to hear that you are in so much pain! Just do what you can, have Luella walk you along with all of the other hairy critters:) Do read the link I gave you, JFK's infamous back problems were cured....
As far as bromine goes, it's mined, there are quite a few bromine wells in my home state of Michigan. Henry Dow of Dow chemical got his infamous start by tapping those wells....nuff said.
Perhaps it's extracted from seawater as well, I'm not sure about that.