I had a lumbar puncture on dec 21,2021. severe headaches and neck pain. 1 blood patch done and after 1 day all symptoms returned. pending 2nd patch tomorrow. its been a week today since lp will this ever go away? and how long after bp do i rest?

Yes, it will go away, probably after the second blood patch. In the meantime, try not to worry: headache after LP is painful and disturbing, but not harmful. It's not possible to say more on a forum like this; every case is different. Keep working witih your doctors. Good luck.

Even if no blood patch is performed, a typical post-lumbar puncture headache will remit by 6-8 weeks. Have seen more rapid reversal with 1-3 blood patches, but usually one suffices. Would definitely stay supine as much as possible, and definitely increase hydration. This is NOT permanent.