I will let you in on the big secret of motherhood that no one ever tells you. They let you fret and worry and panic over labor as if that is the biggest challenge. Ha! Labor is nothing compared to what comes after!
Nature has a good way of helping with labor; no matter how painful and awful it can be, it has an ending, whether it is 12 or 2 hours. You can and will get through it and when you do, it's done. Plus, when it is done, nature floods your body with all sorts of sensations that make you feel great and you have a baby and you're in the clouds. You will forget what the pain feels like (until of course you have another one). So labor, you can do, and your body/mind has got stuff in store to help you with it.
BUT! Here's the dirty little secret. No one tells you what it's like after labor, which is far worse and goes on far longer!!! I would trade labor any day for the first couple weeks post-birth. Your body is in shock. God forbid you have tears or hemmroids or both, and heaven help you when you have to go to the bathroom. And if you are breastfeeding? I mean, nature is great to help you with labor but gets the last laugh when you are trying to recover from birth and you have a small baby gnawing at your sore nipples. And then, you don't get to sleep, so you are also sleep deprived, along with everything else. It is pure hell.
So I mean, you'll do fine with labor. Even the whole of the pregnancy is easier than the first couple weeks after-birth. Although, in fairness, at least you aren't going to be throwing up or trying to walk around on swollen feet anymore.
There's one other secret of motherhood no one tells you: you'll never make fun of adult nappies again, the first time you have to laugh, sneeze or cough post-birth on a full bladder.
You'll be fine. And good luck!