Had the same dilemma during my pregnancy. My OB told me that you couldn't do anything but wait until your baby wants to be born. I took evening primrose for 2 weeks, 2x a day, but closed pa rin cervix until my due date at 40 weeks. OB did not want to go further kasi delikado kapag lumagpas ka ng 40 wks. Had CS delivery. My baby had cord coil kaya pala hindi bumaba. 0cm until that day. Talk to your baby, baka mag listen po. But don't force a normal delivery kasi it might cause more harm than good.