I had the first lot of gels (like big syringe)inserted at 8pm and was monitored for next half hour. The second lot was put in at 6:30 the next morning as the first lot had done nothing. Was on and off monitoring for several hours, apart from when there was a blackout and the hospital was on emergency power only, which was a weird experience.
My waters were broken at about 12pm and I was only 4cms dilated and was monitored again and FINALLY Jensen made his appearance at 14:14.
His birth was different and harder than my first.
Hope this helps, and Good luck with your delivery and enjoy your beatiful baby.