The Top 10 Hidden Twin Pregnancy Symptoms

Hey there, mom-to-be! Pregnancy is an incredible journey, filled with ups and downs, surprises, and unforgettable moments. I’m here to share some valuable insights about hidden twin pregnancy symptoms that I wish I had known earlier in my pregnancy. My story began with a few surprises along the way. At 18 weeks, I discovered I was carrying identical twin girls called mono mono twins. So, let’s dive into ten lesser-known signs that might save you from a few surprises of your own!

A pregnant woman displaying hidden twin pregnancy symptoms with her hands on her stomach.

1. Extreme Fatigue

During a twin pregnancy, extreme fatigue can be a standout symptom. While feeling tired is quite common in pregnancy, the exhaustion you might experience when carrying twins can be different.

It’s like having an overwhelming need for rest that goes beyond the usual tiredness.

If you need more naps or feel unusually drained, it could indicate that you’re expecting twins. Your body is working extra hard to support two growing babies, which can lead to heightened fatigue.

2. Intensive Morning Sickness

Morning sickness is a well-known early pregnancy symptom, but when you’re pregnant with twins, it can be more intense. Think of it as regular morning sickness on steroids.

You may experience severe nausea and vomiting that might disrupt your daily life.

For me, surprisingly I did not have crazy morning sickness, but instead, I felt like I was down and out with the flu. Hot flashes, doubled-over belly aches, and super nauseous. I’m not saying this to scare you but to prepare you if your gut tells you something isn’t right.

If you struggle to keep food down or feel nauseous all day, it’s important not to ignore these persistent symptoms. Consult your healthcare provider for guidance on managing severe morning sickness.

3. Rapid Weight Gain

Hidden twin pregnancies often come with faster weight gain. This is because your body produces more hormones, and your uterus grows to accommodate two babies.

If you notice the numbers on the scale increasing rapidly, even if you’re not indulging in excessive snacks, it could be due to the changes in your body as it supports the growth of two little ones.

Before my first trimester was over, my belly popped out like I was 4 to 5 months pregnant. I thought it was because it was my second pregnancy (which could have played a part), but it was definitely because I was having twins (and didn’t know it yet)!

4. Increased Appetite

With twins on the way, you might find that your appetite increases significantly. This insatiable hunger is your body’s way of telling you it needs more nourishment to support the development of both babies.

Don’t be surprised if you’re raiding the pantry more often; it’s a natural response to the increased energy demands of a twin pregnancy.

A woman experiencing hidden twin pregnancy symptoms holds a bowl of cereal.

5. Strong Intuition

Listen to your gut. Sometimes, your instincts can provide valuable clues. If you feel something is different about your pregnancy, trust that intuition!

While it’s not a definitive medical sign, it can prompt you to seek additional ultrasounds or medical advice if you suspect you might be carrying twins.

6. Early Fetal Movements

Feeling those little flutters for the first time is one of the most AMAZING things. But if you feel it earlier than expected, it can be a delightful sign of a twin pregnancy.

Twins tend to be more active in the womb, and you might sense their movements earlier than with a singleton pregnancy.

Those early kicks and flutters can be a wonderful reminder that you have two little ones growing inside you. I felt the flutters for the first time before my first trimester ended.

7. Unusually High hCG Levels

Human chorionic gonadotropin (hCG) is a hormone produced during pregnancy. In twin pregnancies, hCG levels may be higher than in singleton pregnancies. If your healthcare provider mentions elevated hCG levels during prenatal care, it could indicate that you’re carrying twins.

8. Measuring Ahead

During your prenatal checkups, your healthcare provider measures the size of your uterus. If you consistently measure ahead of where you should be based on your gestational age, it might indicate that hidden twins are the reason behind the larger uterus size.

If your healthcare provider does not measure you and you feel they should, ask. My OBGYN never did this throughout my pregnancy, so I never thought to measure my belly. Keep this one in mind!

9. Extreme Round Ligament Pain

Round ligament pain is normal during pregnancy, but it can be more intense with twins. This pain often feels like sharp, shooting sensations in your abdomen. If you’re experiencing severe round ligament pain, don’t hesitate to discuss it with your doctor to ensure everything is progressing as it should.

10. Visible Movement

As your twin pregnancy progresses, you might have the remarkable experience of seeing visible movements on the surface of your belly. These movements are a surefire sign that you may have active little twins in there, and it can be an exciting and heartwarming moment during your pregnancy journey.

Remember, every pregnancy is unique, and not all these symptoms will apply to every twin pregnancy. If you suspect you might be carrying twins or experiencing any of these signs, discussing your concerns with your healthcare provider for proper evaluation and care is important.

Frequently Asked Questions (FAQs)

How Do I Know If I’m Carrying Twins?

Identifying a twin pregnancy often involves monitoring for certain signs, such as extreme fatigue, intense morning sickness, rapid weight gain, or a strong maternal instinct. However, the most reliable way to confirm a twin pregnancy is through an ultrasound conducted by your healthcare provider.

Are Twin Pregnancies More Complicated?

Twin pregnancies are considered higher risk due to the increased likelihood of complications like preterm birth, gestational diabetes, and preeclampsia. However, many twin pregnancies proceed smoothly with proper prenatal care and monitoring.

Do I Need to Eat More During a Twin Pregnancy?

You will likely need to increase your calorie intake during a twin pregnancy to nourish both babies adequately. Consult your healthcare provider or nutritionist to develop a balanced diet plan that meets your needs.

What Are the Delivery Options for Twins?

The delivery method for twins depends on various factors, including their positions in the womb, the type of twins, and your overall health. Options include vaginal delivery, cesarean section (C-section), or a combination. Your healthcare provider will discuss the best approach for your unique situation.

Is It More Expensive to Have Twins?

A twin pregnancy can be more expensive due to increased medical visits, potential complications, and the cost of providing for two infants. Planning your budget accordingly and exploring available financial resources, such as insurance coverage and government programs, is essential.

To Wrap It Up

While every pregnancy is unique, knowing these hidden twin pregnancy symptoms can help you stay prepared and informed. My own journey with identical mono mono twin girls definitely had its surprises, but being aware of these signs could have made those early weeks a little less shocking!

Remember, trust your intuition, communicate openly with your healthcare provider, and enjoy every moment of this remarkable journey.

Wishing you a smooth and healthy pregnancy! You’ve got this!

With Gratitude,


Have you experienced any of these hidden twin pregnancy symptoms, or do you have a unique story to share? I’d love to hear from you! Please leave your comments below.

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10 must-know hidden twin pregnancy symptoms.

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About The Author

Linds is the proud mom of two little miracles, Mono Mono twin girls, and one AMAZING older brother! She is the founder and content creator of Mono Mono Twins, Intensive Therapy for Kids, and Co-Founder of The LENN Foundation, a 510c3 that helps children with cerebral palsy receive grants for intensive therapies to thrive.


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The contents of the Mono Mono Twins Site, such as text, graphics, images, and other material contained on the Mono Mono Twins Site (“Content”), are for informational purposes only. The Content is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health providers with any questions you may have regarding a medical condition.

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