Is Morning Sickness Suddenly Stopping a Sign of Miscarriage?

Morning Sickness Usually Goes Aways During the Fifth Month of Pregnancy

pregnant woman with morning sickness
Getty Images/Paul Viant

It can be a little disconcerting if you're struggling with nausea and vomiting during your pregnancy, barely able to tolerate the thought of eating, and then you wake up the next morning and you feel fine. Normally you'd feel thrilled to not feel sick, but if you were already nervous about miscarriage, it's easy to assume the worst.

What Is Morning Sickness?

About 75 percent of women experience morning sickness, or nausea and vomiting, during pregnancy.

Morning sickness begins shortly after your first missed period and extends through the fifth month of gestation.

Women with morning sickness present with on-and-off vomiting along with nausea that can last all day long. Although morning sickness is uncomfortable and painful, it does not put the baby at risk and doesn't increase the risk of miscarriage.

When vomiting during pregnancy gets really bad and happens a lot, it's called hyperemesis gravidarum. Severe hyperemesis gravidarum may require hospitalization. Thyroid problems can lead to hyperemesis gravidarum; therefore, people with this condition are typically tested for levels of thyroid hormone.

Changes in Morning Sickness and Pregnancy Symptoms

Vanishing morning sickness, even early in the first trimester, does not mean you have had a miscarriage. It is true that fading pregnancy symptoms can occur with a miscarriage, but symptoms can fluctuate or disappear early in a viable pregnancy as well.

On average, most women find their pregnancy symptoms become less bothersome by somewhere around the end of the first trimester, but it can also happen sooner or later. Just because some of your pregnancy symptoms have disappeared does not mean you have had a miscarriage.

If you have bleeding or cramping along with your loss of morning sickness, however, there is more reason to be concerned about miscarriage--and you should call your physician to find out what's going on.

If you have no other miscarriage symptoms, chances are nothing's wrong. If you're still worried, however, you can check with your physician about it. Some physicians might be willing to order an early ultrasound or check your hCG levels to help you feel more reassured, especially if you have had a previous missed miscarriage.

How Is Morning Sickness Treated?

During the first trimester of pregnancy, the embryo and later fetus are particularly sensitive to teratogens, or substances that can cause birth defects. Therefore, it's a good idea to limit your exposure to medications, including those taken to treat nausea and vomiting, during the first trimester. During the first trimester, you should only take medications that your OB-GYN recommends and that you absolutely need.

For most people, antiemetics or anti-vomiting medications, antispasmodics, and antihistamines are generally avoided when treating nausea. If you need to take something, there are certain prescription medications that can help with morning sickness, such as Zofran.Some women who have morning sickness experience relief after getting a shot of vitamin B6, which is safe to take during pregnancy. 

Morning sickness usually subsides after about the fifth month of pregnancy.

It's normal for your morning sickness to go away, and its disappearance does not necessarily mean that there's something wrong with your baby. However, if you're concerned or are experiencing other signs of miscarriage, contact your OB-GYN immediately.

Source:

American Pregnancy Association, "Miscarriage." July 2007. Accessed 24 Nov 2008.

Rogers VL, Worley KC. Obstetrics & Obstetric Disorders. In: Papadakis MA, McPhee SJ, Rabow MW. eds. Current Medical Diagnosis & Treatment 2016. New York, NY: McGraw-Hill; 2016. Accessed March 04, 2016.

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