Sounds like you're lucky...I hated braxton hicks!!!! With my first child I was the same way...no pains at all, no dilation, no nothing until it was time...then my water broke, I started dilating, and had a healthy baby boy in 8 hours. Good luck!
There is nothing wrong with you. Some don't dilate till they're in labour. And some need to be induced because sometimes they don't go into labour on their own.