![Sonographic Evaluation of the Yolk Sac - Tan - 2012 - Journal of Ultrasound in Medicine - Wiley Online Library Sonographic Evaluation of the Yolk Sac - Tan - 2012 - Journal of Ultrasound in Medicine - Wiley Online Library](https://onlinelibrary.wiley.com/cms/asset/853856fb-1434-478e-866e-cf500cbe6f62/jum201231187-fig-0001-m.jpg)
Sonographic Evaluation of the Yolk Sac - Tan - 2012 - Journal of Ultrasound in Medicine - Wiley Online Library
![6,300+ Sac Stock Photos, Pictures & Royalty-Free Images - iStock | Amniotic sac, Money sac, Sac icon 6,300+ Sac Stock Photos, Pictures & Royalty-Free Images - iStock | Amniotic sac, Money sac, Sac icon](https://media.istockphoto.com/id/1217028134/photo/sacs-of-coffee-corn-and-soybean.jpg?s=612x612&w=0&k=20&c=B11bJnlXrfp4-zuCR0NFdjVryEWnpHqjEcaG7wrqk78=)
6,300+ Sac Stock Photos, Pictures & Royalty-Free Images - iStock | Amniotic sac, Money sac, Sac icon
![Is the sac suppose to be empty? This isn't a hate post, I just have never had a scan before 6 weeks of pregnancy so I'm not sure what it's suppose to Is the sac suppose to be empty? This isn't a hate post, I just have never had a scan before 6 weeks of pregnancy so I'm not sure what it's suppose to](https://preview.redd.it/is-the-sac-suppose-to-be-empty-this-isnt-a-hate-post-i-just-v0-86m6r494wk4a1.jpg?width=1080&crop=smart&auto=webp&s=bdad87d0c349e82da1a7d5874022cf1c0be5c03d)
Is the sac suppose to be empty? This isn't a hate post, I just have never had a scan before 6 weeks of pregnancy so I'm not sure what it's suppose to
![Maternal physical activity affects yolk sac size and growth in early pregnancy, but girls and boys use different strategies | Scientific Reports Maternal physical activity affects yolk sac size and growth in early pregnancy, but girls and boys use different strategies | Scientific Reports](https://media.springernature.com/full/springer-static/image/art%3A10.1038%2Fs41598-023-47536-4/MediaObjects/41598_2023_47536_Fig1_HTML.png)