
What the Yolk Sac Does During Pregnancy - What to Expect
By the 10-week mark, a yolk sac will typically measure a (still tiny!) 6 millimeters. What if there’s no yolk sac during a 6-week ultrasound? If the yolk sac isn’t visible at your six-week …
10 Weeks Pregnant: Baby Development, Symptoms & Signs
Jul 29, 2025 · How Big Are 10-Week Bumps? Your 10 weeks pregnant belly If you haven't already looked in the mirror lately and examined your newly pregnant body and your 10-weeks …
Gender Ultrasound: Am I Having a Boy or Girl? - What to Expect
A gender ultrasound can accurately predict whether you’re having a boy or girl. Learn more about how it works and the characteristics to look for.
What Does It Mean to Have "Soft Markers" for Down ... - What to …
Journal of Ultrasound Medicine, What Is the Importance of Second-Trimester “Soft Markers” for Trisomy 21 After an 11- to 14-Week AneuploidyScreening Scan? Opens a new window, 2014. …
Ultrasound During Pregnancy - What to Expect
Jul 6, 2023 · First-trimester ultrasound An early ultrasound is often a routine part of prenatal care between 6 and 9 weeks of pregnancy, though it can happen anytime before week 14. But a …
Nuchal Translucency Test — What to Know About Screening
Nov 15, 2022 · Here's when and why nuchal translucency is recommended and what you can expect from this common screening. What is a nuchal translucency test and what does it …
Nub Theory, Explained: How the "Angle of the Dangle" …
WhatToExpect.com, Your 20-Week Anatomy Scan: What It Is, What It Checks, and What to Expect, October 2025. National Institutes of Health, National Library of Medicine, The …
Are 3D and 4D Ultrasounds Safe During Pregnancy? - What to …
While 4D ultrasound "has been used to study the fetal heart, fetal movement, and fetal behavioral states,” says Dr. Smith, "there are no specific indications for ordering or recommending a 4D …
Subchorionic Bleeding (Hematoma) in Pregnancy: Detection and …
Noticed vaginal bleeding during the first trimester of pregnancy? It could be a subchorionic bleed — a condition that should clear up on its own and that usually doesn't pose a risk to you or …
When Your Baby’s Heartbeat Starts and When You Can Hear It
When does your baby have a heartbeat? By week 5 of pregnancy, the cluster of cells that will become your baby's heart has begun to develop and pulse. If you have a first trimester …