anyone who has experienced real labor contractionss

A couple of questions!!
1. Did you only feel it in the center of your lower belly? My whole belly tightens but the pain is only down low. And I mean PAIN not just uncomfortable 
2. Did you ever start up a contraction by your positioning? I know Braxton's can do this but I'm having these painful ones sometimes when I roll over or stand up. They're just as painful as the ones I'm getting that come on their own 
I guess I know they aren't braxton hicks anymore but wondering if it's false labor