Week Thirteen: Baby flexes and kicks
You are 13 weeks pregnant. (fetal age 11 weeks)
- The fetus has grown to about 3 inches (8cm) long.
- Weight approximately 1 ounce (25 grams).
- Bone is beginning to replace cartilage and the ribs are appearing.
- The nose and chin are well defined.
- Movements can be measured.
- The child will begin to learn to suck its thumb.
- The child can open and close its mouth.
- The external genitalia are well defined making it is possible to
determine the baby's gender.
Week Fourteen: Hormones start up
You are 14 weeks pregnant. (fetal age 12 weeks)
- The fetus is 3 and half inches (9cm) long.
- Weight is about 1 and half ounces (45 grams).
- The eyes are slowly moving towards the centre of the face.
- The nose is more pronounced. The ears are fully developed.
- The cheekbones are visible. The first hair is appearing.
- The kidneys are producing urine.
- In girls, the ovaries are moving down towards the pelvis.
- In boys, the prostate gland is developing.
- For girls, the ovaries move into the pelvis.
Week Fifteen: Bones and muscles grow
You are 15 weeks pregnant. (fetal age 13 weeks)
- Baby is now over 4 inches (10cm) long
- and weighs about 2.5 ounces (75 grams).
- He or she can move its arms and make a fist.
- Fingernails and toenails are present.
- Baby's skin is still very thin.
Week Sixteen: Facial expressions are possible
You are 16 weeks pregnant. (fetal age 14 weeks)
- The fetus measures nearly 5 inches (12cm) from head to buttocks.
- The fetus weighs about 3.5 ounces (100 grams).
- The fetus is covered with a protective soft down to regulate its
- Fat begins to form underneath skin.
- Baby hears external voices, sleeps and dreams.