4 Weeks Pregnant Baby Development Symptoms And More
Your Baby’s Development at 4 Weeks Starting at week 4, your baby is called an embryo. At just 0.2 mm, your little embryo is about the size of a poppy seed. Which Trimester? First trimester How Many Weeks to Go? 36 weeks Implantation When the fertilized egg is in the uterus and attaches to the uterine wall it is called implantation. Implantation usually takes place six to ten days after ovulation....