Uterine Artery Doppler and 11-14 / 20-22 Weeks of Gestation Pregnancy

Inclusion Criteria: * Gestational age 11-14. applying to the outpatient clinic at week * Single spontaneous pregnancy * Having a first pregnancy (primigravid nullipar) or having given birth once (primipar) (first birth by vaginal route or cesarean) * Result of previous pregnancy with live birth (term delivery without obstetric complication) * No intrauterine growth restriction in the first pregnancy * Women who gave birth by cesarean section were not placed due to caesarean indication due to placental location-invasion anomaly, maternal chronic disease (hypertension, diabetes, coronary artery disease, etc.), placental detachment. Exclusion Criteria: * Multiple pregnancies * Pregnancies with assisted reproductive techniques * Placental anomaly in previous pregnancy * Maternal chronic hypertension, preeclampsia, history of diabetes * Pregnant women who smoke * The presence of fetal chromosomal or structural anomaly * two or more cesarean sections * Having undergone non-cesarean surgery (myomectomy, septum or polyp resection ... etc) * Presence of uterine structural anomaly