Mine didn’t affect me too much you just lie on your side ad the doctor gives you a local anasthetic in your back. They then put a large needle into your spine and extract some of the fuild for testing,
They should guide you every step of the way and tell you what they are doing takes about 30 mins or so depending on how fast the fluid comes out. They will then show you what they hve extracted and ask you to lay down for about anhour and not to esert yourself too much.
I was adised not to drive for a few hours and I may get a head ache.I didn’t get a head ache but I know people who have had a LP and got a head ache for hours but like most hings everybody is different.
I was told by the doctor that I was a very ‘paitent’ paitent lol
Try not to worry, it’s a very simple procedur.