First of all, sorry to hear about all your problems.
Second, did you taper UP on the florinef? It is not a fun medication to take - for a tiny little pill, it packs a wallop. I suggust you cut the pills into quarters and start with a quarter for a week, then when you finish up a few pills, then move to halves, then move up to a whole pill.
I took the pill for Cushing's and now take it for Addison's - and I had to taper into it. It can cause headaches but if you taper into it, you will have less side effects and more benefits. My endo also suggests salt tablets with it but not sure that will be the same in your case. I take 1 gram sodium chloride tablets to keep my blood pressure up and sometimes just use those when my BP gets wonky.
It takes a while to get used to... also, it may take more than one pill - but back off, taper up, and then see how you do!
Good luck!