Mucus plug

Bita

I have just lost my mucus plug, I'm 40+4 and how long does it take for labor to start. I have had some mild cramping hour's ago. Yesterday they were not able to do a membrane sweep because they couldn't reach my cervix. Tomorrow they will try again to do the sweep. Also have induction planned for Sunday. How long does it take for labor to start after loosing mucus plug?