Title: First Trimester Fetal development information How your baby is developing growing inside you in months one two three month 1, 2 or 3
Headings: First Trimester:
Weeks, Months and Trimesters Guides
First Trimester:
Week By Week Pregnancy Calendar

Content: This will disappear as the baby grows. 6 weeks - The embryo itself is about a 1/4 inch (6mm) long. Major organs, including the kidneys and liver, have begun to develop, and the neural tube, which connects the brain and spinal cord closes. The brain develops into five areas and some cranial nerves are visible. The arm and leg buds are visible. The physical sensations of pregnancy start -- nausea, fatigue, sore breasts and frequent urination. 7 weeks - The embryo's hands and feet are shaped like paddles, but the fingers are beginning to take shape. The embryonic tail has now almost disappeared. The pituitary gland is also forming and the fetus is beginning to grow muscle fibers. The heart has divided into the right and left chambers and is beating about 150 beats a minute which is about twice the rate of an adult.