The Effect of Acupressure on Initiation of labor

INTERVENTION: acupressure was done 30 minutes in 3 points include LI.4, GB.21 and SP.6 control group didn't have any intervention and did midwifery routine . Intervention 1: acupressure was done 30 minutes in 3 points include LI.4, GB.21 and SP.6. Intervention 2: control group didn't have any intervention and did midwifery routine . CONDITION: postdate pregnancy. ; Prolonged pregnancy Prolonged pregnancy PRIMARY OUTCOME: Bishop score. Timepoint: first session for acupressure, 24 hours after first time and until delivery. Method of measurement: Vaginal exam. Period of time from acupressure to delivery and active phase. Timepoint: first session for acupressure, 24 hours after first time and until delivery. Method of measurement: time. Spontaneous delivery. Timepoint: first session for acupressure, 24 hours after first time and until delivery. Method of measurement: Vaginal exam. INCLUSION CRITERIA: INCLUSION CRITERIA: nulliparous women with uncomplicated pregnancy; Cephalic singleton fetus at 40 – 42 weeks of gestation and Bishop score= 4; Normal Biophysical profile and NST. Exclusion Criteria: Obvious tight pelvic in vaginal exam; using other methods of labor induction like caster oil, nipple stimulation; being in active phase or having contraction; preeclampsia; Diabetes or other systemic disease.