The biggest change in the body at 16th weeks is the look and size of the breasts. Milk glands start production and veins become more visible as the blood flow increases. An increased weight in the womb as the waistline continues to stretch and expand. Pregnancy back pains are also due to begin, as most women gain five to ten pounds at this point.
The patterning of the baby’s scalp begins. The baby’s heart is now pumping about 25 quarts of blood each day, and this amount will continue to increase as the develops. The baby is about the size of an avocado, length is about 4 ½ inches from head to bottom and weighs 3 ½ ounce.
Uterus growth will be in continuation, less nausea, fewer mood swings, and “glowing” skin contribute to an overall sense of well-being.