Yesterday I was sitting normally and suddenly I felt uncomfortable pain in the left side of my back. I tried to control it for half hour by lying down on bed but nothing relieved it. Then I had to take a pain killer After few hours again the uncontrollable pain started And now I feel relieved only until I am on a pain killer My exams are going on I m unable to sit walk aur stand without a pain killer Till now I have taken 3/4 doses and I m using MOVE also in my back What should I do further?? What can be the reason of this sudden pain?? I have not experienced this kind of intense pain in my life before