Month 4: Your baby is very active. The fetus moves, kicks, sleeps and wakes, swallows, can hear and can pass urine. The skin is pink and transparent, eyebrows have formed and hair is continuing to grow on the head.
Length: 6-7 Inches
Weight: 5 ounces
Your baby is the size of an avocado.
Month 5: Your baby has a real growth spurt. Internal organs are maturing. The fetus sleeps and wakes at regular intervals and is much more active.
Length: 8-12 inches
Weight: 1/2 to 1 pound
Your baby is the size of a banana
Month 6: The fetus is still growing rapidly and organs are still developing. The skin is wrinkled and red and covered with fine, soft hair. Lungs are still not developed fully. If born at this stage the baby would need highly specialized care.
Length: 11-14 Inches
Weight: 1-1 1/2 pounds
Your baby is the size of a lime or a Mango
Month 4: You start to show! Your nipples start to darken and the line running from your navel to your pubic hair may darken (linea nigra). The next few months are usually some of the easiest in pregnancy because the early discomforts have disappeared. You should begin feeling the baby move.
Month 5: Your uterus has now expanded to reach the height of your navel, and the skin of your abdomen stretches. You should definitely feel your baby moving by now.
Month 6: You will begin your period of greatest weight gain. You may experience a stitch-like pain at times down the side of your abdomen as the uterine muscle stretches.