Csection ?

This is my first time having a scheduled Csection, I've had one vagina and two emergency Csection s. My question is what happens if I go into labor before my scheduled date? I'll be 39 weeks when I'm supposed to go in but with all my previous pregnancies the furthest I've gone is 37 weeks. Also, I am getting my cerclage out when I am 36 weeks, what happens if I go into labor then? Do they stop it? 😫😫 so many questions and my next appointment is a week away lol.