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Twin Pregnancy Weeks 8 and 9: What to Expect

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Twin Pregnancy Guide: 8 weeks pregnant with twins through 9 weeks

At this point in your pregnancy, there’s a good chance you know you’re having twins. How do you know if you’re having twins?

Most doctor’s offices will do a dating ultrasound around the 8 week mark. At 8 weeks, an ultrasound will clearly show if there are one or two babies.

An ultrasound is the best way to know if you are pregnant with twins. While they can also sometimes detect two heartbeats with a fetal monitor, it is often missed!

My first ultrasound with our twins was at 7 weeks and it was pretty clear, to my complete shock!

So, if you’ve just found out that you’re expecting twins and you stumbled upon my blog during your frantic google or Pinterest search about what to expect during a twin pregnancy…

Let me humbly welcome you to the twin mom club. It’s amazing. I mean, it’s really, really hard, but it’s also such a joy.

Here is what to expect as you journey into twin pregnancy during week 8 and week 9.

twin pregnancy week 8 and 9

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8 Week Twin Pregnancy Symptoms (also 9 week twin pregnancy symptoms)

At 8 through 9 weeks pregnant with twins, you are right smack in the thick of it.

It’s. So. Hard.

Hard to move.

Hard to eat.

Hard to be a human and do anything.

But… it will not last forever. I repeat, it will not last forever!

However, basically the biggest 8 week twin pregnancy symptoms are just feeling absolutely terrible.

Morning Sickness

Morning sickness *ahem* all-day sickness, is one of the most common symptoms women experience in the first trimester of twin pregnancy.

With a twin pregnancy, you have double hormones flowing through your body, so it’s very likely that you experience really intense morning sickness.

Keep in mind, that despite feeling incredibly nauseous 24/7, you might not actually throw up. I never experienced actually throwing up once, with any of my 3 pregnancies.

However, the nausea was consistent. And having been pregnant with a singleton, twins, and then a singleton again, I can say with confidence that morning sickness is much worse with a twin pregnancy.

With my third pregnancy, I discovered a product called Tummy Drops that helped tremendously.

I was skeptical to spend $10 on a bag of hard candies, but I swear to you… they are 100% worth it. Whenever I felt a bout of nausea coming on, I popped on in my mouth.

Let’s just say I went through several bags of them! I tried both the peppermint and double ginger peach, and they were both amazing.

You can also check out this post —> First Trimester Essentials for all of the other things that helped get me through the first trimester of both my twin pregnancy and my singleton pregnancies.


You will likely never experience fatigue like that of twin pregnancy.

I felt as if my entire body was hit with a semi-truck, and then I was drugged. Couldn’t keep my eyes open, body collapsing into bed every chance I got kind of drugged.

My advice is to take a nap whenever you possibly can. Have your partner pick up takeout for dinner or rely on freezer meals.

You need to rest if you can! Granted, it’s a lot easier said than done if you work or have other children (I had both).

Rest assured that it’s perfectly normal to feel this way. Not only is your body growing two beautiful babies, but depending on the type of twin pregnancy, two placentas and amniotic sacs.

Once you enter the second trimester, you will feel a bit more energy (although not quite the same as you would during a singleton pregnancy).

If you’re having trouble sleeping at night, this could contribute to your fatigue during the day. Getting quality sleep is something that I struggle with (honestly, pregnant or not) and I have worked really hard to find ways to help me sleep better. –> How to Get Better Sleep While You’re Pregnant!

Mood Swings

They call them raging hormones for a reason… they will make you rage. Or cry. Or both. Try to not get yourself into situations that are overly stressful, which is easier said than done!

If you feel as if your emotions are difficult to control, try to walk away before you snap or say something that you regret. And, if you do go into a rage, be sure to apologize as soon as you cool down.

At 9 weeks pregnant with twins, my hormones were all over the place.

Breast Tenderness

Your breasts are most likely extremely tender and sensitive, as well as growing in size. It may be uncomfortable to sleep at night. Try wearing a loose-fitting sports or sleeping bra at night.

Frequent Urination

While definitely not the worst pregnancy symptom, having to pee all the time sure is annoying!

My doctor suggested that I pee, stand up, and then sit down and try to pee again. He also suggested bending forward completely to help empty my bladder entirely.

This really helped me, however, be careful if you do this at a public restroom with automatic toilets! They will flush on you if you stand up or lean over and it startled me quite a few times.


Staying hydrated and keeping up your fiber intake will really help with this! I had a hard time eating fruits and vegetables during my first trimester. I found that high fiber cereal really helped, as well as sprinkling yogurt with chia seeds and flaxseed.

All Possible Twin Pregnancy Symptoms at 8-9 Weeks

  • Fatigue
  • Breast tenderness
  • Morning sickness
  • Heightened sense of smell
  • Frequent urge to pee
  • Change in appetite: Food cravings and/or aversions
  • Increased emotions and moodiness
  • Gas and bloating
  • Increased vaginal discharge
  • Constipation
  • Nasal congestion

Other Helpful Twin Pregnancy Posts

5 Practical Tips to Get You Through Your Twin Pregnancy: here is your twin pregnancy survival guide! Everything you need to know to survive a twin pregnancy
Preparing for Twins on a Budget: Everything you need to know to prepare financially for the arrival of twins! #expectingtwins #newborntwins #preparingfortwins #twinsonabudget

8-9 Week Twin Pregnancy Belly

Between 8 and 9 weeks into your twin pregnancy, your uterus will be growing and expanding. It’s not uncommon for your pants to be a bit snug, if you can even button them at all!

You probably feel like it’s so incredibly obvious that you’re pregnant… but the rest of the world won’t notice just yet.

twin pregnancy week 8

Here is my 8 with twins belly! My 8 week twin bump felt huge and bloated. It was hard to believe that I was only 8 weeks pregnant with twins in this picture!

This is my bump at 9 weeks pregnant with twins! I was feeling exhausted and terribly sick, and like my 9 week twin bump was H U G E!

Twin Fetal Development at 8-9 Weeks: twins at 8 weeks through 9 weeks

How Big Are Twins at 8 Weeks?

By 8 weeks, your twins are about 1/2-3/4 of an inch and weigh .04 oz. In fruit terms, they are about the size of a raspberry!

At 8-weeks, they are also starting to develop webbed hands and feet, their fingers and toes are starting to form, and the tail is almost completely gone.

How Big Are Twins at 9 Weeks?

By 9 weeks, your twins are about .9 inches and weigh .07 ounces. In fruit terms, they are the size of a cherry.

The 9th week of pregnancy is a big week for fetal development, as it marks the end of the embryo period. This means, that by the end of the 9th week, your babies no longer be an embryo, and develop into a fetus.

twin pregnancy week 8 and 9

Other Twin Pregnancy Posts You’ll Want to Read…

8 Essentials for Twin Pregnancy Discomfort #twinpregnancy #expectingtwins #pregnancy #morningsickness
7 Reasons Why Twin Pregnancy Is So Hard: Twin Pregnacy is incredibly demanding on your body. Read why it's so hard from a twin mom who's been there. #twinmom #twinmomlife #twinpregnancy #expectingtwins #multiplepregnancy #tipsfortwins
The biggest fears of my twin pregnancy and how I overcame them. #twins #twinmom #expectingtwins #newborntwins #twinpregnancy #multiples #momofmultiples

My Twin Pregnancy Experience at 8-9 Weeks

9 weeks pregnant with twins

I loved keeping a pregnancy journal and highly recommend it! It’s especially fun to compare your different symptoms and experiences between multiples pregnancies.

My entry for weeks 8-9 read:

Week 8


I have food aversions to almost everything. Food is gross. My fatigue is INSANE and I’m having heartburn as well.

Fears: Lack of sleep we will experience when the twins are hear, and being pregnant (WITH TWINS!!!) with an active toddler. I’m anxious about both twins making it, and financial stress and whether or not I can continue to work.”

Week 9

I. Am. Exhausted. I can’t eat anything and I’m feeling depressed about how terrible I feel.

Fears: I am so so fearful that both of my babies won’t make it.

8-9 Week Twin Pregnancy Checklist

  • Invest in larger bras if needed. It’s smart to purchase nursing bras if you plan to nurse.
  • Schedule your 12-week checkup.
  • Talk to your insurance company to figure out what your delivery costs will be.
  • Brainstorm how you’re going to announce your twin pregnancy to the world!
  • It’s also never too early to start your twin registry!

Don’t forget to give yourself lots of grace, and take good care of yourself. Twin pregnancy is quite a feat and you are doing great! Thanks for joining me on this journey as you become a twin mom!

Other Twin Pregnancy Updates:

P.S. Make sure you’re following me on social media to keep up with our family and all the twin cuteness! I am on Instagram, Facebook, and Pinterest!

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