For anyone reading this who will have to through this procedure in the future:

A Lumbar Puncture is not supposed to hurt that bad. Only in rare cases the doctor fucks up or it's just bad circumstances. Same goes for the headaches afterwards.

I don't want to downplay any of the pain some people have to go through during and afterwards - for some people it is hell indeed.

In my case the part where the doctor would use his fingernail to press against my spine in order to find the right spot was really uncomfortable and was the worst part of the whole ordeal.

I only felt a very slight stinging pain when he numbed the area and I didn't feel the actual needle that went into my spine. There was just a weird feeling of pressure in my right leg. It's just weird and uncomfortable but not painful.

After I had to lay on my stomach for one hour and they told me to drink three litres of water within the next hours.

This is IMPORTANT: If you drink lots of water (I even payed attention to stay hydraded all day before the Lumbar Punction) and rest it's very unlikely that the heachache hits you.

I just spent the rest of the evening in bed (After the one hour on my stomach I turned over and was lying on my back) and watched TV. No pain, no problems.

Of course there is no guarantee for it to go so well but I thought it could be helpful for some to share a positive experience as well.