I would not take any pain pill because, to my mind, it would not do anything against that short pain. It is really manageable, well, it was for me. So, everyone is different, but it's a sharp, short, burning pain that disappears quite fast as well. I only felt pain when I injected it and maybe one minute afterwards but that was it. No big deal, don't worry. Just take some deep breaths in between the shots and everything will work out brilliantly, believe me.
I did never wait 30 minutes before injection, only as long as it took for the window to become clear so I could see whether the liquid is clear or not. Once I waited longer, so that was maybe 30-40 minutes, but I could not feel any difference. Well, that's just my impression, but it won't be that difficult, Steve.
Wish you all the best and that Humira kicks in fast for you!