i have a back surgery(1 of 3)coming up,that's if i dont back out,im so scared of having my back opened up,having them messing around with my spine,especially a disc they are really concerned about because it's pressing on my spinal cord they said,and what,one wrong touch and im paralyzed? i think of everything that can go wrong,i know,thats not good,anyway,what do they usually give you after major surgery for pain?