VBAC questions

My first child was delivered by c-section due to a failed induction so I was never even close to active labor. I'm 33 weeks along with my 2nd and planning for a VBAC. I'm curious to know since I have never experienced "true labor" or went into labor on my own if it will be like as if I've never "given birth" before? It sounds silly but I'm nervous my body won't do what it's supposed to or I'll be overdue and forced into another c-section.