I'm 18. I've been diagnosed with anxiety, i have panic attacks & i am perscribed Xanax for when i need them. Everyday for the past month I've been feeling down.. I can't seem to focus on anything, I find myself staring at everything, and worrying about nothing. I often get headaches, and feel sick. I recently had this thing happen, i woke up, tryed to walk & i was so weak i couldn't, i was shaking all over, and i was so light headed and dizzy.