Fetal Development Week by Week – Week 34
Your baby now weighs about 4.9 pounds and measures about 18.4 inches long. Your baby is fully developed at this point, but is growing and gaining weight now. Baby’s chances of survival outside of the womb are very good now, with only the lungs needing further development.
Baby is probably in the head down position now and the skull is soft so that baby can move down the birth canal during birth. Pressure from the baby being head down can make you have to urinate frequently.
The immune system is continuing to mature now and preparing to fight infections.
Because your baby is rapidly building up fat, little dimples are forming at the elbows and knees. Creases are forming around the wrists and neck. Bones are continuing to harden now and the waxy substance covering your baby’s skin, vernix, is thickening.
There are several prenatal tests that your health practitioner may recommend at this point. One that you need to ask for, if your doctor or midwife doesn’t suggest is, is the GBS (or Group B Step) test. This test screens for harmful bacteria that you can pass to the baby at birth.