Nausea in the Second Trimester: What’s Normal and What You Can Do

By the second trimester, most women expect nausea to ease — but for some, it lingers a little longer.
If you’re still feeling queasy or find nausea returning around weeks 13 to 27, you’re not alone. Here’s what’s happening, what’s normal, and how you can manage it safely.

Why Does Nausea Continue Into the Second Trimester?

Even after the first trimester, hormonal and physical changes can still affect digestion.
Here are the most common causes:

• Hormones: Estrogen and progesterone remain high, relaxing the digestive tract.
• Reflux and heartburn: A growing uterus can press against the stomach.
• Iron supplements: Some prenatal vitamins can irritate the stomach lining.
• Dehydration or low blood sugar: Skipping meals or not drinking enough water can worsen nausea.
• Sensitivity to smell or taste: Lingering aversions may continue for some women.

Usually, this is mild and temporary — more an inconvenience than a concern.

When Nausea Is Normal — and When It’s Not

Most second-trimester nausea is harmless and doesn’t affect your baby.
But it’s important to know when to call your doctor.

Generally normal:

• Occasional queasiness after meals
• Mild vomiting that doesn’t cause dehydration
• Temporary loss of appetite

Needs medical attention:

• Frequent vomiting or inability to keep food and fluids down
• Weight loss or signs of dehydration (dark urine, dizziness)
• Vomit containing blood or bile

Severe nausea could indicate hyperemesis gravidarum, a condition that requires treatment — your OB-GYN can guide next steps safely.

Does It Affect Your Baby or Weight Gain?

Mild to moderate nausea doesn’t harm your baby. Even if you’re eating less, your body prioritizes nutrients for fetal growth.
However, if you lose weight or feel weak, your doctor might adjust your supplements or prescribe medication to help you keep food down.

How Long Does It Usually Last?

For most women, nausea improves by week 20 as hormones stabilize.
For a few, it may persist mildly through pregnancy, especially with fatigue, reflux, or certain foods.

What Can You Do to Feel Better?

Try these gentle, safe ways to ease second-trimester nausea:

• Eat smaller, frequent meals. Don’t let your stomach stay empty.
• Keep plain snacks nearby. Crackers, toast, or dry fruits can help.
• Stay hydrated. Sip water, coconut water, or lemon-infused drinks throughout the day.
• Avoid strong smells and heavy meals. Choose lighter, home-cooked foods.
• Try ginger or lemon. Both can calm the stomach naturally.
• Rest after meals, but don’t lie flat. Keep your head elevated.
• Take iron with food. It’s easier on your stomach.

If nausea still feels unmanageable, your doctor may prescribe safe anti-nausea medication designed for pregnancy.

The Bottom Line

Nausea in the second trimester is fairly common and usually harmless.
It’s your body’s way of adjusting to hormonal and physical changes — frustrating, but temporary.
Listen to your body, eat what feels manageable, and reach out to your OB-GYN if nausea becomes severe or persistent.

Most importantly, remember: your baby continues to thrive, even on the days your appetite doesn’t.