That's what my doc said! She seemed very confident in the procedure. She "isn't allowed" to do it before 39 weeks either. So, I'll have it done at exactly 39 weeks.
50% ... really? What do you guys think?
With DD, my midwife stripped my membranes at my 39 wk appointment and I had some contractions and lots of cramping but no baby. She did it again at my 40 wk appointment and I had DD 12 hours later. Crazy cramping all day but still had a baby by the end of the day!
I've had it done 3x and 2 of them resulted in labor. The one time that didn't I was roughly 38.5 weeks, so maybe a tad early? The others were 40w5d and 39w4d. So my stat is 66%!
Good luck! I'm going to be begging around 38 weeks, but don't know if my MW will do it or not. We'll see...
I had it done at:
38 wks-nothing happened
39 wks-nothing happened
40 wks-went into labor 12 hours later
It will only work if your body is really close to ready.