Idk what to expect

I know most of us here have had our babies or know they're coming but Idk what to expect.. This is my first and I'm due on the 29th but I haven't felt anything that leads me to believe he's close.. I may have dropped a little but not enough to speak of. He is still moving a lot and the things I feel are just him rolling around on my bladder or rectum really hard. I've had contractions explained but I cant say I really understand what I'm supposed to feel