Babies are great!
First of all, remember that everyone's experience is completely unique. No pregnancy or birth is the same, ever.
Second of all, no matter what you might ever think, you will be able to do everything you need to. I was very scared when I went to deliver my baby, (2 months ago) but it turned out that I was in labor only 12 hours or so with no drugs and it was very painful, but I, and my husband did it! You'll feel so good when your baby is born, you'll be so proud of yourself. Focus on that and not the pain, but believe me, you can handle the pain. I did, and I'm a pussy!
Hmmm....I think that maybe I should have taken lamaze. I didn't, but I think it would have helped.
Congratulations, follow your heart.
Ayame