Probably am BU as I know it's a bit late in the day to be worrying about this but I bought a week by week pregnancy book. I made the mistake of looking in the giving birth section. I'm 15+1 so got a good 25 weeks or so (hopefully) to go just yet, but I'm now terrified.
It gave really detailed description of how you can feel burning, searing pain etc.
I'm scared of all the things that can go wrong too! And do episiotomies hurt?!