I am really worried i have motor neurone diesease, i have had bad shakes, and jerks for a few months now, feel weak in my muscles on the right side, my muscles ache when i use them and its the illness i fear the most. I have had blood tests. Normal. 2 ecg. Normal. And a reflex test from the doctor where she said it was fine, but i just feel like as soon as i use my right arm it aches and shakes. Please does anyone have any advice.