Yes I am also curious why you don't want an epidural.
Just in case it is because you are afraid, hopefully we can ease your concerns. They had 3 failed attempts at getting mine in, but it didn't hurt or anything at all. It just sounded a bit funny because I could kind of hear the needle in my back if that makes sense. I am so scared of needles, but honestly it was fine. The hardest part was bending over and staying still for that long because like you, I was having a gallbladder attack at the time (thank goodness that is removed now!).
The epidural was a fantastic experience for me. I was not dilating at all after 3 days of failed inductions and it was my last resort before a c section. It finally relaxed me and after an hour I dilated to 1 cm lol. Anyway, loved it. It was weak enough that I could move my legs and I could top it up when I wanted to. I will definitely be getting another one for this labour.
Sorry if I haven't helped you at all, but I just wanted to leave you with a positive epidural story. As PP mentioned, I think that majority of women who have epidurals have a positive experience and it is just that the ones that go wrong are more vocal about it.
Good luck. I hope your gallbladder is removed by now and hopefully we have calmed you a little bit.