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Your Pregnancy Journey in 3D Ultrasound: What’s Happening at 5 Weeks?

Writer: A.S, RDMSA.S, RDMS

Updated: Mar 5

At 5 weeks pregnant, your baby is growing quickly, and exciting developments are happening!


3D Ultrasound at 5 Weeks

  • A gestational sac and yolk sac may now be visible using 2D ultrasound, 3D ultrasound using a transabdominal or transvaginal approach.

  • The embryo is still very tiny, but in another week or so, a heartbeat may be detected!



    Side-by-side image illustrating the 5th week of pregnancy: a Flo medical illustration of an embryo next to sesame seeds, representing the embryo's approximate size, with text stating "Now the embryo is the size of a sesame seed" (left), and a 2D ultrasound image clearly showing the gestational and yolk sacs (right).
    Side-by-side image illustrating the 5th week of pregnancy: a Flo medical illustration of an embryo next to sesame seeds, representing the embryo's approximate size, with text stating "Now the embryo is the size of a sesame seed" (left), and a 2D ultrasound image clearly showing the gestational and yolk sacs (right).

The Baby’s Development

  • Your baby is now about the size of a sesame seed!

  • The neural tube (which will become the brain and spinal cord) is forming.

  • The heart is starting to develop and may begin beating soon!


Your Body’s Changes

  • Pregnancy symptoms like fatigue, nausea, breast tenderness, and frequent urination may start.

  • Your BhCG levels are rising, confirming pregnancy on a test.


Your little one is developing fast—each week brings something new! 💕


Ready to see what’s next? 😊

 
 
 

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