If you are a first-time mother, it is exciting and intriguing to discuss pregnancy milestones with your obstetrician. Amazing developments occur during each trimester, and your OB-GYN will be happy to share them with you. While your doctor is ready to answer questions during any phase of your pregnancy, you can learn beforehand what to expect from your baby. 

Obstetrician Explains Critical Events During Pregnancy 

First Trimester 

In the initial few weeks that you are pregnant, your egg will become a fertilized zygote with 23 chromosomes. These genetic codes from you and your partner will determine your baby’s sex, physical appearance, intelligence, and personality traits. In weeks five and six, your child will begin to develop a brain, heart, and spinal cord. Once this occurs, you will be able to visit your obstetrician to hear their heartbeat.

Basic facial features, arms, and legs also begin to form. From weeks seven to 12, your baby will continue to grow their limbs, eyes, mouth, nose, toes, neck, and head. Just before the second trimester begins, your baby is officially considered a fetus. They will have nails, teeth, and the ability to make a fist. 

Second Trimester 

During the second trimester, you will find out the baby’s sex. Their bones will continue to harden, and their heart will pump blood throughout their body. They will also start to develop urine and begin breathing amniotic fluid.

By week 19, you will be able to feel your baby kick and move around. At this point, your baby will be able to recognize your motion. Their hearing will continue to improve, and taste buds will form while the brain is growing rapidly. Around the 24^th week, the fetus will be about a foot long and weigh over a pound. As the last approaches, they will begin to suck their thumb. 

Third Trimester 

By this time, your baby’s brain is fully developed. They can distinguish the difference between light and dark. Body fat will fill out, making them weigh about 3 to 4 pounds by weeks 28-34. They will also open their eyes more and become increasingly energetic in the womb.

From weeks 37-39, your baby is considered full term and space in the womb will become scarce. By this time, their lungs are fully developed, and they have hair on their head. They are also able to make a firm grip.

While you will still feel movement, the strength and frequency of their kicking will begin to diminish. By week 40, you will be ready to deliver. Most infants weigh approximately 7 pounds, 8 ounces, and are about 20 inches long. 

Every baby is a miracle and every trimester is unique. Genesee Valley Obstetrics & Gynecology in Rochester, Penfield, and Clifton Springs, NY, will ensure you receive the best pregnancy care possible through each phase. To learn more about working with an experienced and compassionate obstetrician, visit their website. For prenatal care tips from their OB-GYNs, follow them on Facebook.