by | | 1st Trimester
A pregnancy test taken at this point can measure hCG, the pregnancy hormone in the mother’s urine, and tell her if she is pregnant. By now, the embryo is completely attached to the lining of the uterus and draws nourishment from its...
by | | 1st Trimester
The heart begins to beat just 21 days after fertilization or 5 weeks after the mother’s last menstrual period began. The heart, the size of a poppy seed, is the first organ to function. The first signs of brain development are evident, and the foundation for every...
