Congrats on your pregnancy.
I think i felt the same as you with my first, and the way i got my head around it was that we (women) were made to give birth and i was not the first woment to go through this. My contractions started at the hospital the night i went into labour and didn't even know it, took about 1 to 3 cm before i asked for gas. I asked for something stronger than gas 3 hours later, but i was 9cm ready to push. Yes there is pain and ppl will tell you once you are given your baby to hold you seem to forget about it, and i was like yeah right, but it's true you have just done an amazing thing and birthed a baby and the last think on your mind is the pain you just went through.
Once back in the ward i was up walking around in a couple of hours, but must admit i did have trouble sitting so it was lying on the bed or stand, but I am having my 2nd in 9 weeks and wouldn't change a thing.
Good luck, and best thing is don't listen to ppl's horror stories, ppl always tell you the bad and not the good, and everyone is different.
mummy of 2 girls