I already have one 15 months and another due feb 2>>(i'm 27 weeks)
the one thing I found a little painful(will be later on in pregnancy) is when there legs are digging in your ribs but kicks are cute and somedays you will think they are doing kickboxing or something in there.
Labor pains I didnt find that bad, they do hurt but its how you manage the pain, I had no pain meds and I have a medium/high threshold for pain if you feel you cant take it there is so many options available.
Rate labor pains from 10 being worst and 1 being nothing id say they start off as a 4-5 and work there way up to a 8-9 near the end though.
I only had 4 hrs of labor for first time mom and I think if it would have lasted anything over 15 I would have got myself something, it your choice you really should get book what to expect when expecting its just awesome and has details.
Jess