Morning Sickness: Why It Happens and What Actually Helps

Morning sickness is one of the most common—and often challenging—parts of early pregnancy. Driven by hormonal changes, it can affect how you feel day to day, especially in the first trimester. We break down what’s behind the nausea and vomiting and share effective clinical and practical ways to help you feel better.

first-trimester 9 min read
Pregnant woman experiencing nausea in early pregnancy

TL;DR

Morning sickness, clinically known as nausea and vomiting of pregnancy (NVP), is primarily linked to rising levels of human chorionic gonadotropin (hCG), a hormone produced early in pregnancy. Estrogen also plays a role. Symptoms often peak between weeks six and nine and tend to improve by the start of the second trimester. Dietary adjustments, such as ginger, along with vitamin B6 and, when appropriate, medication, can help provide relief.

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Important

Contact your doctor immediately if you cannot keep any liquids down for 24 hours, experience rapid weight loss, or show signs of dehydration like dark urine or dizziness.

In This Article

What Causes Morning Sickness During Pregnancy?

Morning sickness is primarily triggered by the rapid rise of human chorionic gonadotropin (hCG) and estrogen hormones during the first trimester, which can affect the digestive system and the brain's nausea center.

Despite being referred to as “morning sickness,” nausea can occur at any time of day. This is because rising levels of hCG, which support early pregnancy and placental development, can increase sensitivity in the digestive system, leading to nausea and, in some cases, vomiting. Elevated estrogen levels also play a role, as they can heighten your sense of smell. You may find that previously familiar scents—like your favorite coffee or certain perfumes—now trigger nausea or aversion. At Viva Eve, we’re here to support you throughout your pregnancy, with a focus on your comfort. Morning sickness is a physiological response to hormonal changes, and there are safe, effective options to help manage symptoms.

When Does Morning Sickness Typically Start and End?

Nausea typically begins around week six of pregnancy, peaks between weeks eight and 10, and often improves by weeks 12 to 14 for most women.

For many, the onset of morning sickness is the first physical sign of pregnancy and can begin early in the first trimester. For about 80% to 90% of women, symptoms improve as pregnancy progresses. As you enter the second trimester, hormone levels stabilize and the placenta assumes a larger role, often leading to improved appetite and energy. However, every pregnancy is different, and some individuals may continue to experience symptoms beyond the first trimester. If nausea persists, there are options that can help improve comfort and make day-to-day life more manageable—you don’t need to simply live with ongoing symptoms. At Viva Eve, care may include a range of approaches tailored to your symptoms and individual needs.

Is It NVP or Hyperemesis Gravidarum (HG)?

Standard morning sickness, or nausea and vomiting of pregnancy (NVP), typically involves manageable nausea with or without occasional vomiting. Hyperemesis gravidarum (HG) is a more severe condition marked by persistent vomiting, difficulty keeping down food or fluids, weight loss, and dehydration that may require medical care.

It’s important to distinguish between typical pregnancy-related nausea and a more serious clinical condition. Most individuals with NVP are still able to stay hydrated and maintain adequate nutrition, even if symptoms are uncomfortable. Hyperemesis gravidarum (HG), however, involves more severe and persistent symptoms. If you are unable to keep fluids down, are losing more than 5% of your pre-pregnancy body weight, or are experiencing signs of dehydration, further evaluation may be needed. HG is a medical condition that can lead to complications such as electrolyte imbalances if left untreated. If you are concerned about your symptoms, we encourage you to come into our Midtown East or Forest Hills office for assessment. Care may include IV fluids, nutritional support, and medication to help manage symptoms and support both your health and your pregnancy.

Which Dietary Strategies Can Relieve Nausea?

Eating small, frequent meals and choosing bland, protein-rich foods can help stabilize blood sugar and reduce nausea associated with an empty stomach.

One of the most effective ways to manage nausea is to avoid letting your stomach become empty. When blood sugar levels drop, symptoms can worsen. Keeping a small snack—such as crackers or plain toast—by your bedside and eating before getting up may help reduce morning symptoms. Throughout the day, aim for smaller, more frequent meals rather than larger portions. Simple, easy-to-digest foods can also be helpful. The BRAT diet (bananas, rice, applesauce, and toast) is often well tolerated, along with protein-rich snacks like Greek yogurt or nuts. It may also help to limit foods that are spicy, greasy, or highly acidic, as these can further irritate the stomach. Staying hydrated is equally important. If plain water is difficult to tolerate, alternatives such as ginger tea or electrolyte-containing fluids may be easier to manage. At Viva Eve, nutrition support is part of ongoing prenatal care, and our in-house registered dietitian, Tammy, works with patients throughout each trimester to help tailor dietary strategies based on individual needs and symptoms.
1. **Ginger:** Whether in tea, candies, or capsules (up to 1,000 mg/day), ginger is clinically proven to reduce nausea. 2. **Vitamin B6:** Taking 25 mg of Vitamin B6 three times a day is a first-line medical recommendation for NVP. 3. **Acupressure:** Sea-Bands or similar wristbands that stimulate the P6 point can provide drug-free relief. 4. **Lemon:** Sniffing fresh lemon or adding it to your water can help 'clear' the nausea response.

What Medication Options are Safe During Pregnancy?

Safe and effective medications for morning sickness may include doxylamine and pyridoxine (Diclegis/Bonjesta), and, in more severe cases, anti-nausea medications such as ondansetron (Zofran).

If dietary and lifestyle measures are not enough to adequately manage symptoms, medical treatment may be considered. A commonly used first-line option is the combination of doxylamine succinate (an antihistamine) and pyridoxine hydrochloride (vitamin B6), which is approved for use in pregnancy and has a well-established safety profile. For more persistent symptoms, additional medications such as ondansetron may be considered. Treatment decisions are individualized, with careful consideration of both benefits and risks, and a focus on helping you stay hydrated, nourished, and as comfortable as possible. At Viva Eve, care may include ongoing monitoring to assess how you’re responding to treatment and to make adjustments as needed throughout pregnancy.

When Should You Call Your OB-GYN?

Contact your provider if you have signs of dehydration, are unable to keep food or fluids down for 24 hours, feel dizzy or faint, or notice blood in your vomit.

If you are experiencing persistent nausea or vomiting, it’s appropriate to reach out to your provider—especially if symptoms are interfering with your ability to stay hydrated, maintain nutrition, or carry out daily activities. Pregnancy involves significant physical changes, and symptom severity can vary. Evaluation can help determine whether additional support or treatment is needed to improve symptom control and overall well-being. Morning sickness is common, but there are effective ways to manage it. Adjustments such as timing prenatal vitamins, dietary changes, or medication may be considered based on your symptoms. At Viva Eve, care may include personalized strategies to help support comfort and function throughout the first trimester.
Common Questions

Frequently Asked Questions

Some studies suggest that nausea in early pregnancy is associated with a lower risk of miscarriage. However, not experiencing nausea does not indicate a problem—many individuals have healthy pregnancies without significant symptoms.

In most cases, no. Early in pregnancy, the body is generally able to support the baby’s nutritional needs even if intake is reduced. As symptoms improve in the second trimester, nutrition can be more easily optimized.

Despite the name, nausea can occur at any time of day. For some individuals, symptoms may worsen later in the day due to fatigue, changes in blood sugar, or an empty stomach.

It’s best to speak with your provider before stopping a prenatal vitamin. In some cases, adjusting timing (such as taking it at night with food) or switching formulations may help improve tolerance. Folic acid remains particularly important in early pregnancy.

Some individuals find that strong-smelling foods, greasy or fried items, and coffee can worsen symptoms. Paying attention to personal food aversions and choosing more tolerable options can help manage nausea.

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