5 Week 2First Trimester Month 1Week 4Egg implants in the endometrium of the uterus in about 5-8 days after fertilizationThe cells of the embryo multiply and begin to take on specific functions. The backbone, spinal column, and nervous system are forming. The heart, kidneys, liver, and intestines will soon be taking shape. Nerve growth begins when a sheet of cells on the back of the embryo folds in the middle to form a tube, which will become the future spinal cord. At one end the tube enlarges to form the brain's major sections.
6 First Trimester Month 2 Week 5 the heart begins to beat Week5 embryo is the the size of a raisinHands and feet begin to developEyes are formingWeek 6 the signs of pregnancy start for the mother (nausea, fatigue, sore breasts, frequent urination)Week 7
7 First Trimester Month 3 Week 9 embryo is now called a fetus Kidneys start to produce urineBones and muscles are starting to growLiver, kidneys, intestines, brain and lungs are almost fully formed and beginning to functionHead is about half the size of the entire fetusLegs and arms are long enough to bend and moveWeek 9Week 12
8 First TrimesterWeek 12 fetus is about 2 inches long
9 Second Trimester Month 4 This month is usaully when you feel the baby move for the first timeBaby has developed finger printsExternal sex organs are distinctCan find out gender of babySoft hair called lanugo covers the bodyEyelashes and eyebrows growWeighs 4-7ozWeek 16 fetus is about 7 inches
10 Second Trimester Month 5 Fetus can hear, feel and tasteNails are growingMay start sucking thumbIs about 11 inches long, weighs about 1lb.
11 Second Trimester Month 6 Fetus looks like a newborn babyBones are hardeningCould servive outside of the uterusWeighs about 1 ½ lbsIs about 12 inchesBrain is still developing
13 Third Trimester Month 7Fetus is developing a schedule of sleeping and being awakeBrain is still developingFetus is gaining weightOpens and closes eyesHands can move and graspWeighs about 3lbsAbout 15inches long
14 Third Trimester Month 8 Baby is gaining weight Is becoming too large for uterusLungs and digestive tract are almost fully matureWeighs about 4lbsIs about 17 inches longFetus can hiccup
15 Third Trimester Month 9 Lanugo is almost gone Organs can fully functionIs full term at 38 weeksBaby may drop called lighteningWeighs 6-9lbsIs inches