Skip to main content

Loading Pregnancy Power Hour...

Skip to main content
Pregnancy Power HourPregnancy Power Hour
HomeJust Found Out?How It WorksResourcesFAQsBook Your Session
Pregnancy Power HourPregnancy Power Hour

Pregnancy Power Hour

For Birthing People Everywhere

Just Found Out?PostsResourcesBook Your SessionWork With BrittanyFAQsContactMy Account

Explore

  • Due Date Calculator
  • By Week
  • Conditions
  • Can I…?
  • Foods
  • Nutrition
  • Exercise
  • Lifestyle
  • Prenatal Tests
  • Birth Options
  • Postpartum

Join our community

Stay updated with pregnancy tips and consultation updates.

© 2026 Total Ventures LLC. All rights reserved.

Privacy PolicyTerms of ServiceTerms of SaleMedical DisclaimerCookie Policy
Heartburn at 33 Weeks Pregnant | Pregnancy Power Hour
← All symptoms

Week 33 symptom · mild

Heartburn at 33 Weeks Pregnant

At 33 weeks pregnant, heartburn often peaks as your baby grows, putting more pressure on your stomach and diaphragm.

2 min read

Quick answer

At 33 weeks pregnant, heartburn often peaks as your baby grows, putting more pressure on your stomach and diaphragm.

Also called: pregnancy acid reflux

As you reach 33 weeks pregnant, it's common to notice heartburn, also known as pregnancy acid reflux, becoming more pronounced. This particular stage of pregnancy often brings a peak in symptoms for many parents-to-be. The primary reason for this increase is both physiological and mechanical: the hormone progesterone, which is essential for maintaining your pregnancy, relaxes the lower esophageal sphincter, allowing stomach acid to reflux more easily. Simultaneously, your growing uterus and baby are now significantly larger, exerting direct pressure on your stomach and diaphragm. This crowding effect can intensify the discomfort you might feel.

Heartburn is a widely experienced symptom, affecting a significant portion of pregnancies, with many finding it most noticeable during the third trimester. While it can be uncomfortable, understanding its causes can bring a sense of clarity and calm. It's a normal part of your body adapting to the incredible work it's doing to support your baby's development. This is a time when your body is making many adjustments, from the pressure on your internal organs to changes in blood flow, which can also contribute to other third-trimester experiences, such as the potential for pregnancy varicose vein symptoms at 28 weeks pregnant or even earlier, like pregnancy varicose vein symptoms at 23 weeks pregnant.

When considering ways to manage heartburn, you have several evidence-based options. Over-the-counter calcium carbonate antacids, such as Tums or Rolaids, are often the first line of support and are considered safe throughout all trimesters. If these alone aren't providing enough relief, your provider might suggest famotidine, also known as Pepcid, which is considered safe for use. For more persistent symptoms, omeprazole and other proton pump inhibitors (PPIs) are generally considered safe during the second and third trimesters. It's always a collaborative process with your care team to find what works best for you, ensuring your comfort while prioritizing your well-being and your baby's health.

Beyond medication, there are practical adjustments you can explore. Elevating the head of your bed by six to eight inches, for instance, can make a noticeable difference in reducing nighttime heartburn symptoms. This simple change uses gravity to help keep stomach acid where it belongs. Thinking about your eating patterns and posture can also play a role. As your body continues its incredible work, remember that you get to decide which strategies feel most supportive for you. Just as you might explore different ways to manage other third-trimester changes, like pregnancy varicose vein symptoms at 26 weeks pregnant, finding what brings you ease with heartburn is about informed choices. Your care provider is your best resource for your specific situation and can offer personalized guidance on any of these options.

Free · personalized to you

Get your First-Trimester Read

A short read from Brittany, tuned to your week and what’s weighing on you most — in your inbox in about 5 minutes.

Get my read →

Common questions

Why is heartburn worse at 33 weeks pregnant?+

At 33 weeks, the baby's growth puts more pressure on your stomach and diaphragm, combined with progesterone relaxing the esophageal sphincter, leading to increased symptoms.

What over-the-counter options are safe for pregnancy heartburn?+

Calcium carbonate antacids (Tums, Rolaids) are considered safe. Famotidine (Pepcid) and omeprazole are also generally safe in the second and third trimesters when antacids aren't enough.

Can I do anything for nighttime heartburn at 33 weeks?+

Elevating the head of your bed by six to eight inches is an evidence-based approach that can help reduce nighttime heartburn symptoms.

Brittany Nance

“Pregnancy is under-supported at every week. This is the kind of clear, calm guidance I give my one-on-one clients — and the questions worth taking back to your provider.”

Brittany Nance · Pregnancy Wellness Consultant · full-spectrum doula

Want to talk this through with someone who's been there?

Book a Power Hour with Brittany →

Want this kind of read in your inbox?

I send a short, doula-perspective note once a week — pregnancy reads worth your time, no fluff.

No spam. Unsubscribe anytime. Wellness info, not medical advice.

Written by Brittany Nance, Pregnancy Wellness Consultant· BADT Full Spectrum Doula · Founder, Pregnancy Power Hour
Last reviewed July 1, 2026

This is evidence-informed education from a birth-doula perspective, not medical advice. Always discuss your individual situation with your prenatal care provider.

Keep reading

  • RelatedHeartburn at 34 Weeks PregnantAt 34 weeks pregnant, heartburn often peaks as your baby grows, placing more pressure on your stomach and diaphragm.
  • RelatedHeartburn at 35 Weeks PregnantAt 35 weeks, heartburn can intensify as your baby grows, placing increased pressure on your stomach and diaphragm.
  • RelatedHeartburn at 31 Weeks PregnantAt 31 weeks, heartburn often intensifies as your growing uterus presses upward, making symptoms particularly noticeable, especially when lying down.
  • RelatedHeartburn at 30 Weeks PregnantAt 30 weeks pregnant, heartburn often intensifies as your growing uterus presses on your stomach, making symptoms particularly noticeable when lying down.
  • RelatedHeartburn at 28 Weeks PregnantAt 28 weeks pregnant, heartburn often becomes more pronounced as your growing uterus presses upward, intensifying discomfort, especially when lying flat.
  • RelatedHeartburn at 37 Weeks PregnantAt 37 weeks, heartburn can feel particularly pronounced as your baby's position often creates increased pressure on your stomach and diaphragm.