sharp shooting pains in shoulder

i get random shooting pains in my left shoulder that dont seem to go away for three or four minutes. my eyes twitch and my legs have stress knots in them as well as my back and arms and neck. i am sixteen and shouldnt be so stressed out but i have my reasons and i dont know how to relax also i am going to be going to a doctor to see if im clinically depressed or not because i have been talking to a counselor and she thinks im depressed which i suppose makes sense because i cant sleep at night and i cry all the time and i feel very tired..but if anyone knows how to get rid of stress i need to know very soon or there will be bad happenings in my house thanks a bunch