lol I think this from time to time as well. When I had the flu a couple of weeks ago and when I stubbed my toe I was thinking how am I going to make it through labor again med-free??
Honestly, it is such a different situation and I am a total wimp when I'm pregnant as far as regular bumps and bangs or stomach troubles. However, in labor you have a purpose and you are thinking for two people, it is a totally different mindset.
Try to think of labor as more as running a marathon. Your legs are going to hurt, your muscles will ache and you will acquire pains and struggles but you have a an end result in mind and know you feel that high.
Obviously when you are sick or hurt yourself with no end purpose you just want it to be over : ) Good luck and you can do it!!!