How does anyone recognize early labor?

L

My first kid was induced so I have no idea what to look for or expect for early labor. I am 36 weeks and for the past several days I have had (maybe) Braxton Hicks all day long, sharp pains deep in my vagina which I think are from my cervix dilating, and I have been nauseated. Is this early labor? I have no clue. I feel like I'm going to be walking around and not know and then the baby is just going to fall out at some point.