The #1 Resource & Support Network for Parents of Twins

The #1 Resource & Support Network for Parents of Twins

18 weeks pregnant with twins

18 Weeks Pregnant with Twins

You made it to 18 weeks! HURRAY! By this time you are probably showing pretty well and people are starting to make comments. If they haven’t yet, strap in! Everyone and their uncle knows someone who had twins and they are about to tell you ALLLLL about it. Just smile and nod — the general public is SUPER interested in twins and they are not afraid to let you know it. 

What can you expect at 18 weeks pregnant with twins? We’ve compiled a list of common symptoms, to-do’s this week, pregnancy tips, pregnancy concerns, questions to ask your doctor, advice from other pregnant moms of twins, and tons of other info below to help you through this week in your twins pregnancy. Enjoy!

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17 Weeks Pregnant with Twins 👶👶
👶19 Weeks Pregnant with Twins

18 Weeks Pregnant Video

18 Weeks Pregnant with Twins

Our new digital twin pregnancy journal is up for sale on the Twiniversity Etsy store! This is the first and only digital journal exclusively for twin pregnancy. It’s the perfect way to record your precious twin pregnancy memories to cherish for years to come.  Click here to learn more… and while you’re at it, check out our expecting twins classes and Twiniversity Shop!

what's going on

What’s Going On With Those Twinnies?

Your twins each weigh about 6.7 oz, which is about the size of an artichoke.

Your twins are flexing their arms and legs, and you may be able to feel those movements. A protective coating of myelin is forming around their nerves.

18 weeks pregnant with twins
to do list

To-Do List

  • Call your health insurance company to check coverage and ask what is available to you as a parent of twins. You should specifically ask about coverage for a lactation consultant, a visiting nurse (if you have a c-section), a breast pump, a pregnancy support belt, and prenatal childbirth classes. You may be able to get your Twiniversity expecting twins class covered by insurance or by your FSA.
  • Find a lactation consultant in your area if you plan to breastfeed twins. Ask friends and your OB for referrals. You’ll want to find someone who has twin experience and who also gels with your personality and breastfeeding goals.
  • Attend a local twins club meeting. You can find a local twins club at the Multiples of America page, or do a search on Google or Facebook with your city name and “moms of twins club”. 
what to do when you're breastfeeding too ad

Worried about breastfeeding twins? What To Do When You’re Breastfeeding Two is an on-demand online breastfeeding twins class made just for YOU! This course was created by Twiniversity in partnership with Judy Teibloom-Mishkin, IBCLC. Click here to learn more…

18 Weeks Pregnant with Twins
5 pregnancy tips

5 Tips for a Better 18th Week

  1. Start sleeping on your side. Lying on your side with your knees bent is likely to be the most comfortable position as your pregnancy progresses. It also makes your heart’s job easier because it keeps the babies’ weight from applying pressure to the large vein (called the inferior vena cava) that carries blood back to the heart from your feet and legs. Invest in a good pregnancy pillow to help with this.
  2. Enjoy the time and don’t wish it away waiting for the anatomy/gender scan.
  3. Don’t overthink every twinge you feel in your tummy. But once your babies start kicking on a regular basis, you can use the Count the Kicks app to keep track of their movement (you can track twins), which will help you to know when/if their movements have slowed down, which would be a reason to call your doctor.
  4. Do your Kegel exercises! This is the muscle that you use to hold in your pee when you’re running for the bathroom. This is important to avoid incontinence. Whenever you’re at a traffic stop, in a waiting room, or just generally bored, this is a perfect time to do Kegels. Clench the muscle for a count of 10, or do 10 reps, whichever you prefer. 
  5. Organizing the nursery can help keep your mind off of small discomforts. Here’s some ideas to get you started. 
love to dream swaddle up
Need more sleep? Swaddle UP!

Love to Dream is dedicated to helping babies to get more quality, restful, and safe sleep. The Love to Dream Swaddle UP (Twinnie Award Winner of the “Best Swaddle” category 2 years running!) is designed to prevent unraveling and to keep arms positioned upward. The “arms up” positioning allows babies to suck their thumbs while being swaddled, which helps them to learn self-soothing. Your babies will LOVE having their arms up so they can suck on their fingers or gently rub their cheeks while feeling the comforting hug of a Swaddle UP. Plan to have a minimum of 3 of these for each of your babies – one in use, one in the wash, and one in backup. You’ll always want to have at least one of these on hand at all times for each twin!

twin pregnancy advice

Advice From Other Twin Moms

  • Be proactive. You don’t know if you’ll be on bed rest or have the energy to do certain things as the time continues. Right now with higher energy, do whatever you can. Abby J., Delafield, WI
  • Enjoy feeling great; I hear it gets worse. Start doing more Kegel exercises – accidents are starting to happen more often! – Lauren, Johannesburg, South Africa
18 Weeks Pregnant with Twins

Got twins? Us too! The Twiniversity Podcast with Natalie Diaz was created BY parents of twins FOR parents of twins, from your pregnancy days through your twin’s teenage years, this podcast covers it all. It’s all about parenting twins, offering plenty of strategies for making life better, parenting hacks, and, of course, humor. We are laughing WITH you every step of the way.

twin pregnancy concerns

Concerns Other Twin Moms Had

  • I’m not feeling one of the babies moving as much.
  • That I wake up feeling like nothing is happening inside me.
  • Dealing with indigestion.
  • Keeping hip pain in check.
  • That I haven’t felt much movement yet.
  • I just want to have a scan to make sure they are good in there. It’s tough to go a few weeks without seeing them.
doctor questions

Questions Twin Moms Had for Their Doctor

  • When do I need to register at the hospital?
  • Is it okay to only feel one baby moving?
  • Why is my head hurting all day?
  • Am I really feeling kicks or am I imagining it?  
  • Why do I feel completely fine?
  • Should I meet with a lactation consultant?
  • When should I sign up for an infant CPR class?
  • What are the symptoms of preterm labor?
  • What are the sexes!!??  
  • Is feeling pressure normal? I feel like I have a bowling ball up in there.

Typical Tests That Are Done

Between weeks 18-22 you’ll have a level 2 anatomy scan. This is when you can typically find out the sex(es) of your babies. Don’t be surprised, however, if it’s too difficult to see one or both babies’ genitalia to determine the sex, most often because of the position the babies are in. During this scan, your medical team will be assessing the development of each baby’s brain, face, heart, spine, and other major organs, as well as the placement of the placenta(s), umbilical cords, and amniotic fluid levels. Do not be surprised if you are asked to come back for a follow-up scan. This is very common with multiple birth pregnancies because it’s often difficult for the technician to get a good picture if your babies are not cooperating.

If you’ve chosen to do a Multiple Marker Screen (MMS, a.k.a. Triple or Quad Screen Test), you’ll have blood drawn between week 15 pregnancy and week 20. This screening measures levels of certain proteins and hormones in a mom-to-be’s blood to give her a more accurate assessment of baby’s risk of neural tube defects than the first-trimester screening offers.

Amniocentesis is another elective test—it happens between weeks 15 and 20. This invasive test can diagnose neural tube defects, chromosomal abnormalities, and other genetic disorders. It’s considered safe overall but does pose some risks, so talk it over with your doctor to decide whether or not you’ll have the procedure. You may choose amnio if you have an abnormal triple or quad test or if your baby has a higher risk of genetic abnormalities.

For the amniocentesis, the doctor will use the ultrasound to see inside your pregnant belly and will guide a needle into the amniotic sac to gather a sample of fluid to be tested.


18 Weeks Pregnant with Twins
18 Weeks Pregnant with Twins

“I feel like I finally popped this week! I look like it and my belly button feels like it hah! My hormones felt it as well, as it was probably my most up and down feeling week yet.  I had a doctor’s appointment which went great and I got to see my twins for the first time in 4 weeks! Starting from now on, I’ll be seeing my OBGYN and my specialist every two weeks, alternating between the two. The other big thing I got to do this week was have dental work done! I broke a tooth in the first trimester and I finally got to get it fixed. Hooray!” Lauren, 18 weeks pregnant with twins

product recommendations

Product Recommendations

Maternity Yoga Pants

Maternity Jeans

Best Cradle – Maternity Support Belt

Palmer’s Cocoa Butter Tummy Butter & Stretch Mark Massage Lotion

Rachel’s Remedy Breastfeeding/Sore Breast Relief Packs

Digital Twin Pregnancy Journal

Snoogle Pregnancy Pillow

Boppy Pregnancy Wedge

Boppy Pregnancy Support Pillow

Check out this list of more Must Have Pregnancy Products You Need Right Now

18 Weeks Pregnant with Twins

Have you taken your expecting twins class yet? We offer a great class on demand so you can take it on your own schedule! There are so many video modules covering everything from your twins’ baby registry to your first week at home with twins! Sign up today to get started before your twins arrive.

18 Weeks Pregnant with Twins
what to do when you're having two

An excerpt from “What To Do When You’re Having Two

Twin To Twin Transfusion Syndrome (TTTS)

This occurs when blood moves from one twin to the other via the umbilical cord.  The twin that loses blood (the Donor Twin) and the one who receives it (the Recipient Twin) are both negatively affected, the extent of which depending on the severity of the transfusion. This occurs in 1 in 7 monochorionic twin pregnancies.

If you are diagnosed with one of these syndromes, reach out to Fetal Hope, an organization that was created and is run by several families around the country who have dealt with TTTS, with varying outcomes.  The Foundation serves as a liaison between families diagnosed with intrauterine fetal syndromes like TTTS, Amniotic Band Syndrome (ABS), Hypoplastic Left Heart Syndrome (HLHS), Lower Urinary Tract Obstruction (LUTO), and many others.  They offer support through family matching, its online forums, bereavement counseling, and Travel Grants when travel for lifesaving treatment is immediate and necessary. Fetal Hope serves to empower parents with knowledge and information in advocating for their unborn twins.  You can learn more at

Twiniversity Twin pregnancy guide

Pregnant with twins and not sure where to start? Visit the Ultimate Twin Pregnancy Guide to find all the top articles and resources to get you ready for twins. While you’re at it, check out our expecting twin classes and Twiniversity shop!

REMINDER: Don’t forget to take a belly shot!

Belly Photos at 18 Weeks Pregnant With Twins

Ultrasound Photos at 18 Weeks Pregnant With Twins

Articles You Should Read This Week

Videos to Check Out

Register for Class

18 Weeks Pregnant with Twins

Have you taken your expecting twins class yet? We offer a great class on demand so you can take it on your own schedule! There are so many video modules covering everything from your twins’ baby registry to your first week at home with twins! Sign up today to get started before your twins arrive.

twin pregnancy week by week emails

Want to get weekly emails about your twin pregnancy? Sign up for the Twiniversity email list! Subscribe today to get emails about giveaways, events, weekly article roundups, and more! We’ll be sending you a weekly twin pregnancy email to keep you on track with your pregnancy to-do list! Click here to learn more… and while you’re at it, check out our expecting twins classes and personal twin parent coaching services.

17 Weeks Pregnant with Twins 👶👶
👶19 Weeks Pregnant with Twins


18 weeks pregnant with twins

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