Highlights of First Trimester Pregnancy and Second Trimester Pregnancy

Week 4: Your fertilized egg is implanted in the lining of your uterus and placenta and umbilical cord begins to form.
Week 6: The heart of the tiny embryo begins to pump blood and the neural tube which will become the closure of the spine. She takes on a C-shaped arms and tiny legs and buds begin to form.
Week 8: brain activity begins. Webbed fingers and toes begin to form.
Week 9: His heart is almost entirely developed. Eyelids form along the hair follicles and nipples.
Week 10: The embryo is now officially a fetus. It will make occasional breathing movements, drawing oxygen through the umbilical cord.
Week 11: Almost all organs and body structures are formed and begin to function. Genitalia are male or female form. Your fetus can now sigh, stretch, move your head and suck his thumb.
Week 12: at the end of your internship trimester of first pregnancy your baby’s nose and lips are completely formed and it began to produce and excrete urine.
Week 13: This is the start of your internship second quarter of pregnancy and your baby begins to look more human.
Week 14: the baby’s nose, lips and taste buds are formed.
Week 16: His eyes begin to move slowly and can not frown.
Week 18: The teeth have started forming and the baby can hear sounds in your body and may even be surprised to loud noises.
Week 20: The sweat glands are training and the baby is covered with a white substance called vernix cream that protects skin caseosa in the aqueous medium.
Week 22: baby’s brain is in a period of rapid growth.
Week 23: If it’s a boy, his testicles begin to descend into the abdomen to the groin. If it is a girl of her uterus and ovaries have developed.
Week 24: Baby has established a pattern of sleep and wakefulness. Real hair will start to grow on his scalp. If she was born today she would have a 50% chance of survival.
Week 26: His eyes begin to open and lungs begin to develop surfactant, which allows them to inflate.
Week 28: You are now at the end of your internship second quarter of pregnancy and your baby can taste and smell, the eyes can produce tears and her bones are fully developed (though still pretty sweet). Weight gain is rapid from this week on his brain and will increase to 500% by weight between now and delivery.