Prediction of Spontaneous Onset of Labor at Term

Inclusion Criteria: * Alive fetus * Singletons * Cephalic presentation * Intact membranes * Gestational age ≥ 38 weeks and 5 days Exclusion Criteria: * Fetal malformations * Symptomatic uterine contractions * Contraindication for vaginal delivery * Medical indication of induction of labor or elective cesarean delivery * Maternal desire to induce labor * Maternal negative to enrollment * Language barrier * Inability to give consent Specific Exclusion Criteria for Pregnolia System (if any of these criteria is present, the measurement of cervical stiffness using Pregnolia aspiration device will not be performed): * Müllerian anomalies with two cervices * Severe vaginal bleeding * Cervical dilatation * Known HIV * Visible, symptomatic cervical or vaginal infections * If one of the following conditions is present on the cervix at the 12 o'clock position: * Nabothian cyst * Cervical myomas * Cervical condylomas * Squamous intraepithelial lesion * Conization/LEEP2/LLETZ3 * Cervical endometriosis * Cervical tears * Cervical dysplasia * Large ectopy, for which it is not possible to find a suitable location near the ectopy where native tissue is present * Large scar tissue, for which it is not possible to find a suitable location near the scar where native tissue is present.