By week 33 of pregnancy, about half a pound a week of your weight gain is going to your baby. You may be feeling very tired, and have Braxton Hicks contractions in preparation for labor.
Your pelvis may feel pressure from your baby, causing aches and discomfort. Your belly button may pop out, but it will return to normal after delivery.
When you're 33 weeks pregnant, your baby measures about 12 inches from crown to rump and weighs about 4.4 pounds
Throughout the next few weeks, your baby will gain more than half of his or her birth weight. Some babies have full heads of hair by now; others have only a bit of fuzz.
If your baby is a boy, the testicles are descending into the scrotum. All five senses are developed and your baby can listen, feel, and see. Your baby's eyes can detect light and the pupils can constrict and dilate in response to light.
Your baby's lungs are almost completely matured. Fat will continue to be deposited on your baby's body for protection and warmth. Babies gain a good deal of their weight in the final few weeks before birth. Around this time your baby's skin color turns from red to pink.