My daughter had similar symptoms - the headaches were particularly bad and she used to go quite dizzy.  Does Chelsea also go a bit clammy and have tingling in her fingers and toes?  When Chelsea’s endo says her levels are fine - has he checked all her levels?   My daughters 17OHP levels were great as were her blood sugars (hypoglyceamia being the first obvious thought).  She did however have a high renin result and extra florinef sorted out the problem.  I note that Jenny says her sons eye dr thought her sons symptoms were down to the florinef - perhaps he was right!  I would therefore suggest you ask to have the renin level checked, if it hasn’t already been done.  Good luck!