Well I was induced,it wasn't really anything to worry about....Just try to relax!!I had the prostin gel(like a pessary),the first one on the Friday at around 8pm,I had already started to dilate(around 2cm),started getting what I thought were contractions at around 11 pm,which carried on through the night and stopped around 5am Saturday morning.I then had another gel around 11.30 am Saturday morning,but that did nothing at all,so on the Sunday I had my waters broken,and my God do the contractions come on fast!!!
I think that is what the injection does,brings labour on really quick and strong,and I'm sure it's a drip that you have,but don't quote me on that.
All in all it's nothing to worry about,midwife just gives an internal,then applies the prostin gel,you have to lie on your side for a while,and thats that!
Good luck,hope things get going naturally in the meantime,you never know!!