The best advice I would give is to expect it to take three days before anything happens...sometimes it kicks things off more quickly, but it is usual for this not to be the case
I saw afterwards that my caseloading midwife wrote in my notes that they had planned to come in on the Sunday to be with me in active labour as that is when they thought it would be when I was induced on Thursday and they were absolutely right! I wish they had at least told me this was the norm so I was more prepared for days of endless waiting.
At my hospital they put in the pessary and then don't even check for 24 hours if they can break the waters as it is such a gentle one. Then if after 24 hours they can't, they give you the gel, and then try and break the waters 12 hours after this...if not the gel again and another 12 hour wait....
So we were due to go in on Thursday morning, no bed until 5pm, went in for 6pm, pessary in at 7pm...spent that night and all the next day reading books, wandering about bored and desperately hoping for things to happen. Checked at 7pm Friday and no chance of waters breaking, so they decided not to put the gel in until Sat morning, Sat 9am gel used, Sat 9pm more gel used...Sun 9am waters broken....and THEN labour actually started, three days after we arrived.
Also, my MW had warned me that once they break the waters, there is a time limit for things to progress naturally before they start to use Syntocin drip ( I think its 12 hours ish) as they don't want any risk of infection.
She also told me that the drip can make babies unhappy so they monitor you closely at this point and if it does, they go to section just to make sure the baby doesn't get distressed. I was really glad they warned me this is a side effect of the drip, as they wanted to put it in at 10pm on Sunday evening, when DH had gone home for a change of clothes and feed and walk the dog. I refused to let them put it in until DH returned in case the baby didn't like it and we had to have a section. As it turns out this is what did happen, and if I hadn't insisted on my DH being back first he would have missed it all as it happened really quickly in the end. I'm really glad I was forewarned about this.