okay, everything you said is due to stress "sympathetic predominance".
sweaty cold hands,fast heart rate,palpitation,hight basil metabolic and loss of appetite causing weight loss,headaches,irritable bowel,nervousness,etc,,
once your EC is over all these things well be over.
Advice,""helped me a lot"" everyday you need 2500ml water,1800ml through drinking and 700 ml through eating.however due to the stress of EC your water intake will be diminished "loss of appetite and high BMR and excessive sweating" and this will worsen your problem,so you should overcome your stress and eat and drink will.
plz eat at least 3 meals with lots and lots of fruit and vegis,and drink lots of water,this will help you,
sorry for my bad language.
My email is Genzowakabashi at yahoo dot com