I've been going through a mountain of stresses recently - have been trying to manage it with ADHD meds, but they aren't really working. Last weekend my brain just decided to dump on me and I basically collapsed. Every single day since then I've had an intense headache/heart palpitations and an intense fogginess that won't disappear. Whenever I sit or lie down, my head pounds like crazy. 

I've felt pangs of anxiety before, but they tend to be fleeting, I've never experienced anything like this - I can only describe it as a permanent hangover that doesn't get better with sleep.

I'm off work and just resting right now. Doc booked me in for an ECG AND Blood test this morning just to rule anything else out. He also prescribed me mirtazapine as of yesterday so I'm hoping it clears up soon, but can anyone else share any similar experiences? Just some words of reassurance would be good!