I would like to know if I am suffering with stress? I have had a constant headache for 3 days, I feel sick or like I am going to be sick, I have pain/muscle ache at the base of my skull, I feel at times shaky but I am not actually shaking, I am tearful and emotional, I don't sleep well and feel tired all the time, generally feel like I am not in control of things and this is not me at all.