Morning sickness can range from mild, occasional nausea to severe, continuous, disabling nausea with bouts of vomiting. Symptoms may be worse in the morning, though they can strike at any time of the day or night.

Although its cause is poorly understood, morning sickness has been linked to increasing Reference estrogen Opens New Window levels, along with other hormone changes during early pregnancy.^{Reference 1}

• The first signs of morning sickness usually develop during the month following the first missed menstrual period, when hormone levels increase.
• Women carrying twins or more have more pronounced hormone increases and tend to have more severe morning sickness.

There is no way of predicting how long your morning sickness will last, even if you have suffered through it before. Nausea and vomiting usually go away by 12 to 14 weeks of pregnancy. But in some cases, morning sickness can last well into a pregnancy.

Morning sickness begins during the first trimester, when the developing baby (fetus) is vulnerable to birth defects. So during the first trimester, use home treatment to treat nausea and vomiting unless your doctor recommends medicine to treat your symptoms.

If you have severe, persistent nausea and vomiting that is causing dehydration or weight loss, your doctor can prescribe a medicine for you that is not known to cause fetal problems.

The following are safe, proved treatments for morning sickness. Still, few women gain complete relief from morning sickness treatment.

• Reference Certain antihistamines like doxylamine or dimenhydrinate, taken as your doctor advises, may relieve morning sickness.^{Reference 2} If one of these antihistamines alone does not relieve your morning sickness, you can try taking it with vitamin B6.^{Reference 3}
• Reference Ginger, taken regularly as a powder in a capsule, grated fresh into hot water for a tea, or in syrup or crystallized form, may relieve morning sickness after a few days of treatment.^{Reference 3}
• Reference Vitamin B6 and B12, taken regularly as your doctor advises, can reduce nausea and vomiting.
• Reference Acupressure, firmly placed on the P6 point (the inner side of your arm, in line with your middle finger and one-sixth of the way between your wrist and elbow), relieves nausea for some women.

Follow these guidelines for minimizing nausea and vomiting during pregnancy.

• Keep food in your stomach but not too much. An empty stomach can make nausea worse. Eat several small meals every day instead of three large meals.
• For morning nausea, eat a small snack (like crackers) before you get out of bed. Allow a few minutes for the snack to digest, then get out of bed slowly.
• Stay hydrated. Drink a lot of fluids. Try a sports hydration drink, as well as water, broth, or juice.
• Eat more protein, and cut your fatty food intake.
• Avoid smells and foods that make you feel nauseated. Citrus juice, milk, coffee, and caffeinated tea commonly make nausea worse.
• If you are taking iron supplements, ask your doctor if they are necessary. Iron can make nausea worse.
• Get lots of rest. Stress and fatigue can make morning sickness worse.

Contact your doctor immediately if you vomit more than 3 times a day or are unable to take fluids, especially if you also have pain, fever, or both.

Now that you have read this information about morning sickness, you can take action toward curbing your symptoms. If you have any questions about home treatment or are considering using doxylamine, talk to your doctor or nurse-midwife.

Return to topic: