What painkillers for the spine do not impair consciousness and concentration?

Hi, For 3 years I have a hernia and discopathy in the L-S episode and often in this episode the disc falls out I do not know why, but to the point. I'm currently studying so I'm not working. Today my disk fell out because it hurts a lot at the slightest movement or even when walking or sitting. On Tuesday I have a practical driving test and I do not know what to do with this fallen disc, I will not postpone the exam because I waited for it for over a month and I can not even postpone. I wanted to ask what I can do with this episode of L-S and how to help myself? What can I safely get into the pain on the day of the exam so that it does not disturb my awareness and concentration while driving? Thank you for your help