i agree somewhat with leesa. the best thing to do during the lumbar puncture(spinal tap) is just TRY(easier said than done) to relax and bear with it. it will hurt a little(depending on pain tolorance) or a lot, lots of pressure and maybe spasms and nerve pain. it tends to cause what is called LP migraines that can last for several weeks. best advice i could offer from experience, try not to stay in a upright position for more than 15 mins every couple of hrs for at least a week or two, use caffeine to constrict the blood vessels in the brain for the migraines, and if it is too much to deal with or you cant take the time to heal slowly and properly don't be proud(aka DUMB) ask for a blood patch.