The Second Trimester of Twin Pregnancy

Let’s start off by diving into the first trimester of a twin pregnancy – what you can expect for yourself, what your babies’ development looks like, and how you can set yourself up for a healthy, comfortable pregnancy.

Finding out you’re pregnant is an exciting event, and discovering that you’re carrying twins can be even more amazing. Though the idea of caring for two babies instead of one can be daunting, you’re surely looking forward to meeting your twins and hoping to have as smooth and healthy a pregnancy as possible. Most twin pregnancies are very similar to singleton pregnancies in terms of symptoms and experiences during the first trimester, as the babies are still just beginning to grow. By the time you get to the second trimester of twin pregnancy, however, you may start to notice the differences between carrying twins and carrying a single fetus.

What Can I Expect from My Second Trimester Carrying Twins?

Now that you’ve reached your second trimester, you will likely start to notice any morning sickness with twins starts to fade, and your regular appetite starts to come back. In fact, you might even realize that you’re hungrier than ever, as your babies are growing rapidly and need plenty of nutrients to develop. While many pregnant women claim to be eating for two, you’ll be eating for three! Throughout the second trimester, you should notice your baby bump start to grow quickly as your babies expand in size. Your body is supporting the growth of not one fetus but two, so you may experience more fatigue and weight gain than if you were having a singleton pregnancy. Whether you’re expecting identical twins or fraternal twins shouldn’t make any difference in your symptoms.
What Can I Expect from My Second Trimester Carrying Twins?​
Care and Management of Multiple Pregnancy​

Care and Management of Multiple Pregnancy

The twin pregnancy experience can vary greatly from mother to mother, which is why it’s so important to attend regular checkups and ultrasound appointments with your healthcare provider. During these appointments, you’ll be able to share any abnormal symptoms you’re experiencing and receive advice concerning diet, activity levels, and medications.

Pre-Eclampsia: Symptoms, Causes, Treatments, and Prevention

Pre-eclampsia is a complication of pregnancy that usually happens at or around 20 weeks. Some of the symptoms of this complication include headaches, swelling, blurred vision, and high blood pressure during pregnancy.
Pre-eclampsia can strike suddenly during pregnancy, which is why regular doctor visits are important to keep up with. You’ll want to have every chance to pinpoint any potential signs early on.

Twin Pregnancy Second Trimester Week by Week

14-17 Weeks


Babies are rapidly gaining mass and will start to make movements within your womb. As your morning sickness is subsiding, your babies’ bones are starting to harden and take shape, and their eyes are beginning to move behind their lids.

18-22 Weeks


You may notice more achiness and fatigue as your babies continue to get bigger. You’ll start to feel little flutters of movement as your babies are getting increasingly active. Your twins can now hear and are beginning to grow hair!

23-27 Weeks


Many twin mothers start to experience Braxton Hicks contractions during the late stage of their second trimester, which are false contractions the body produces in order to practice for eventual labor. You may notice your babies begin to respond directly to sounds they recognize, and their fingerprints and lungs are reaching full development.

Frequently Asked Questions

Many of the most common twin pregnancy symptoms stories are very similar to the experiences of women carrying singleton pregnancies. Singleton and multiple pregnancies are generally at risk of the same complications, such as pre-eclampsia. However, as you enter your second trimester carrying twins, you may experience more fatigue, weight gain, and achiness because you’re supporting the growth of two fetuses instead of one.
Yes, one twin can be miscarried while the other continues to develop normally during a twin pregnancy. This phenomenon is known as vanishing twin syndrome, and it usually occurs in the beginning stages of a multiple pregnancy, if at all. If you miscarry one of your fetuses during the second trimester, the miscarried twin’s fetal tissue will likely be absorbed naturally by your own body and the surviving fetus.
In some cases, the positioning of twins in the womb will make it difficult for even the most experienced obstetrician to detect both babies, leading them to believe that you’re only pregnant with one. However, as you enter the second trimester and your babies grow rapidly, this will become less likely.

The same mother getting pregnant with more than one set of twins is extremely unlikely. The odds of this happening are around 1 in 3,000. However, having multiple sets of identical twins is much more unlikely than having multiple sets of fraternal twins.

Once you discover that you’re pregnant, your doctor will be able to detect the presence of multiple fetuses as early as 10 to 14 weeks.

In general, twins can be safely delivered starting at around 34 weeks. Some healthcare professionals will recommend that women carrying twins give birth earlier than the 40-week mark based on the sizes and growth rates of their babies.

If you’ve had a Cesarean section with a past pregnancy, most doctors won’t recommend vaginal delivery with twins. However, the best course of action for the delivery of your twins should be left up to your doctor. They will consider your medical history, the positioning of the twins, whether your cervix stays dilated after the delivery of the first baby, and other factors.

Twins tend to be just as active as single babies in the womb as they develop. During the second trimester, twins will begin to make noticeable movements and even respond directly to familiar stimuli, like your voice.

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