nerve pain

hi everyone. At this moment I am having horrendous pain and am wonderingg if anyone has any tips.My pain is on my left side anf is goig from head to toe,and is affectig my eyes,I can’t see properly. I have had 2 amytriptiline (I am only supposed to have 1 at 3pm) but dont know wyat else to do. I am shaking like a leaf (sorry for ant mistake) I have used my TENS machine which normally workd but that seemed to make thigs worse. Can anyone help?Please!

Lynne x