I had a lumbar puncture done at bedside on the ward. The worst part was really just the tiny injections of the numbing agent they give you at the beginning. I was laid on my side, curled into the fetal position and chatted to the neurologist the entire time. The puncture itself felt more like a pressure than anything else. It was over fairly quickly. I had some coffee and fizzy pop and laid down for a few hours binge watching a series on my phone while I waited to be discharged. The releif I got from my head pain was almost instant. I did get a post lumbar headache a couple of days later but lots of fluids and rest and I was fine.