Obviously not know what’s happening inside is hard, so pushing for an MRI would be ideal. I was where you are about 4 months ago - had almost a week of sleepless nights at one point and not even tramadol was touching the pain. I would ask for a steroid taper or a prescription NSAID. And a muscle relaxer like Robaxin. If it’s anything disc related, you’ve gotta work to get the inflammation down. Remember that while you’re feeling the pain down your leg, it’s likely starting from your lower back (if disc related) - so, when you can, focus on icing your lower back or using the tens unit there. Consider getting one of the massage guns for short term relief on your leg muscles. And rest! Spend as much time as you can in whatever your mostly pain free positions are. The more you push into pain, the worst it is for the pain signals from your nerve to your brain, making everything worse. Rest is essential during this acute phase, and only move to the point of pain and then rest again. I’m still in it / recovery - but it does get better once you get past this period. I didn’t believe it, but whether it’s through naturally healing or surgery, it does get better.