At week 30, your baby weighs over three pounds .Also growing at a quick pace Is your Baby's brain. Until now, the surface of your baby's brain was smooth — but now, your fetus's brain is taking on those characteristic grooves and indentations. Now that baby’s brain and new fat cells are regulating his body temperature, the lanugo — the soft, downy hair covering your baby's body — is beginning to disappear. This week, your baby's bone marrow has taken over production of red blood cells (before, tissue groups and then the spleen took care of producing the blood cells).
Diet and exercise go hand in hand so keep in mind not to even miss one day of some sort of exercise in order for your pregnancy to be fruitful.