The first ultrasound in pregnancy typically occurs between 6 to 9 weeks of gestation, often called a dating ultrasound. This early scan confirms the pregnancy, estimates the due date, and detects the fetal heartbeat. If a woman has irregular periods or is unsure of her last menstrual period, an ultrasound for pregnancy confirmation helps determine gestational age accurately. Additionally, this scan can identify the number of embryos present, ruling out multiple pregnancies, and check for early complications such as ectopic pregnancy or miscarriage risk. Women who undergo fertility treatments or have a history of pregnancy loss may have an even earlier ultrasound in early pregnancy to monitor fetal development closely.
For most women, a more detailed first trimester ultrasound is performed between 11 to 14 weeks, known as the nuchal translucency scan. This screening evaluates fetal anatomy and helps assess the risk of chromosomal abnormalities such as Down syndrome. During this scan, doctors measure the thickness of the fluid behind the baby’s neck and may combine the results with a blood test for a more accurate risk assessment. The first ultrasound appointment is an exciting milestone, allowing expectant parents to see their baby for the first time. Whether it’s a transvaginal ultrasound in early pregnancy or an abdominal scan, this essential diagnostic tool provides crucial insights into the baby’s health and development.