Please anyone can tell me what could be wrong with me ... Lately I start to feel really a weak , headaches, fever on and off, hard to get up or walk, hands shaking , chest hurts, and even when I eat , just half an hour I feel again shaking , I really don't feel hungry or thirsty but after eating I feel shaky and like I am going to pass out , what could it be ... Please help . Thank you all!!