I’ve been suffering increasingly with terrible fatigue. I was told many years ago it’s probably M.E and to pace but it’s just getting worse. I have headaches and a pounding heart when I stand up. My pulse goes from 70 when sitting to 127beats 2,5 and after 10 mins is till 123. I feel I can’t get my eyes to focus on things when I’m standing. I’m always freezing, especially in my hand and feet. Also have brain fog and so forgetful. All of this increases 10 fold when I’m on my period. I’m 40. My fatigue is killing me and I can’t really work anymore.