Scheduled c-section and labor

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Is anybody else worried about going into labor before their scheduled c-section? I’m not sure why but this is something I worry about.

With my first I had a vaginal delivery at 40+1

With my second I had an emergency c-section at 41 weeks

Now my third I have a scheduled section at 39+2 (Jan 21st) so I should be fine, right? In case I would start with contractions, do I just go in? Call? I know I should have asked my doctor about it but I forgot.