What to Expect During Your Second Trimester

Congratulations you are at the beginning of your second trimester!

“At the beginning of the second trimester, babies are about 3 1/2 inches long and weigh about 1 1/2 ounces. Tiny, unique fingerprints are now in place, and the heart pumps 25 quarts of blood a day. You’re likely to feel kicks and flutters soon if you haven’t already.”

Week 14

This week you baby is more fluid in his/her movements as they reposition their arms. Your baby’s intestines are producing meconium, the waste that will make up your baby’s first bowel movement after birth.

Your baby is now the size of a peach!

Week 15

This week, your baby’s proportions are becoming more normal, since now his/her arms out-measure the arms. Your baby’s ears have migrated to the sides of the head, and his/her eyes are moving to the front of her face. Your baby can even wiggle their and toes and he/she is making breathing movements in preparation for life outside the womb.

Your baby is now the size of a navel orange!

Week 16

Your baby now weighs in at a whopping three to five ounces, and is four to five inches long. The bones in his/her ears are now in place letting your baby hear your voice as you talk. Facial muscles are being developed making your baby able to make a few expressive frowns and squints, even at this early stage.

Your baby is now the size of an avocado.

Week 17

This week your baby’s heart is now regulated by his/her brain to beat 140 to 150 times per minute — about twice as fast as yours! Other developments included the ability to suckle and swallow reflex preparing them to suckle from the breast or drink from a bottle.

Your baby is now the size of a pomegranate.

Week 18

Your baby is now about five and a half inches long and five ounces in weight. He/she is now large enough for you to feel him/her twisting and rolling around in the womb. Your baby is also developing yawning and hiccupping – meaning you may be able to feel those too! Your baby is growing very quickly which is why you’re probably feeling so hungry!

Your baby is now the size of an artichoke.

Week 19

This week your baby is about a half pound in weight and six inches long. Vernix caseosa, a waxy or cheese-like white substance can now be found coating the skin of your baby providing a protective barrier for fluids in the womb. The vernix caseosa can also protect a newborn from infections after birth. This is because the coating contains antioxidants, as well as anti-infection and anti-inflammatory properties. It can also reduce friction as your baby passes through the birth canal during delivery.

Your baby is now the size of a mango.

Week 20

Congratulations! You have halfway through your pregnancy.

Your second trimester ultrasound is normally scheduled for anytime between 18 and 22 weeks. During this time your doctor can let you know if you are having a boy or girl.

If you’re having a girl, her uterus is now fully formed and her ovaries are holding about seven million primitive eggs. If you’re having a boy, his testicles have begun their descent from the abdomen to their ultimate destination — the scrotum. And while your baby is definitely getting bigger, there’s still plenty of growing room in there, which allows him/her to twist and turn (and allows you to feel your baby’s acrobatics!).

Your baby is now the size of a banana.

Week 21 

Your baby is swallowing a little bit of amniotic fluid each day (for nutrition, hydration, and to practice digesting), so he/she eats whatever’s on your menu — and gets to put those developing taste buds to good use. So go ahead and nosh on those nachos (or crunch those crudités): Your baby may develop a taste for them when their older.

Your baby is now the size of a head of an endive.

Week 22

This week, your baby weighs in at a whopping pound and measures nearly eight inches. He/she has formed eyebrows, eyelashes, and maybe even some hair on their head. He/she can even perceive light and dark, hear your voice, heartbeat, and your gurgling stomach.

Finally as your baby’s brain and nerve endings develop, he/she may reach for their face (or whatever they can reach) just to experiment with their newfound sense of touch.

Your baby is now the size of a coconut.

Week 23

Right now, your baby’s organs and bones are visible through his/her skin, which has a red hue due to developing veins and arteries. Beginning this week, he/she will start to pack on the pounds and by month’s end they will be double the weight they are now.

Your baby is now the size of a grapefruit.

Week 24

Your baby is about eight and a half inches long and weighs 1.5 pounds, gaining steadily at a rate of six ounces per week. Much of that weight comes from accumulating baby fat, as well as from growing organs, bones, and muscle. Also, those little ears are getting sharper and can hear very loud sounds, from a barking dog to a jackhammer.

Your baby is now the size of a cantaloupe.

Week 25

This week you baby is nine inches long and just about 1.5 pounds. Under his/her skin, capillaries are forming and filling with blood. By week’s end, air sacs (also lined with capillaries) will develop in your baby’s lungs, getting him/her ready for that first breath. Also, your baby’s tiny nostrils, which have been plugged up until now, are starting to open, getting his/her vocal chords ready.

You baby is now the size of a head of cauliflower.

Week 26

Your baby now weighs about two pounds and measures nine-plus inches long. You baby’s eyes, which until now were developing under fused eyelids, start to open. Of course, there’s not much to see in there, but if your baby spots a bright light or hears a loud noise near your belly, you may notice an increase in fetal activity. In addition, your baby is developing senses, features, and even talents!

Your baby is now the size of a head of kale.

Week 27 

This week, your baby’s not just getting bigger—he or she is also getting smarter. Your baby is about fifteen inches — more than a foot long — and triple (or even quadruple) what it was in week 12.  Your baby may even recognize your voice by now!

You baby is now the size of a head of lettuce.


Congratulations! You made it through your second trimester!  Keep an eye out for our next blog to learn what to expect during your third trimester.


Source: The Bump, Your Pregnancy Week-By-Week, https://www.thebump.com/pregnancy-week-by-week