this is a definitive 10+...but hold on! It's a different pain, as it has a known ending and reason. And it varies, unlike say a broken bone or migraine headache. When I was in transition, in between contractions, I had NO PAIN..so it really is odd.
BUT, if you happen to believe in a "higher power", by the time you hit 40 weeks pregnancy, it's like "I don't care what I have to go through, I want my body to myself now!" It's a great plan. And it continues. When the baby is about 3 months old, and you haven't had a full 3 hours sleep, and you're ready to throw the baby out with the bath water, the darn thing SMILES at you! Awww, how cute, I'll keep it. Then when you think you'll scream if you have to watch Barney one more time, kindergarten rolls in....perfect a 1/2 day to breath. It just keeps working out..college etc.
Now, back to your pain question. Think of the weakest person you know that is a mother, and remember, if she could do it so can you.