Im not sure if this will be any use to you, but thought Id post it anyway just incase! My MW told me when they were talking about inducing me that when you first go in, they use like a pessary (is that the right word?) with a hormone in which is supposed to soften the cervix and bring on labour. They leave it for a while, and if that doesn't work they might break your waters, which usually starts off contractions. If the contractiosn don't come after a few hours, they'll start you on a drip. Picotin maybe? I cant remember the name. That was the case being induced at 38 weeks anyway, so not sure if it will be the same for you.
I hope everything goes well tomorrow

Put your feet up today!
xxx