Morning sickness – everything you need to know

“When does morning sickness start and is it a good sign?” Midwife Katie answers some of the most common questions about morning sickness and nausea.

Morning sickness – everything you need to know
“How long does morning sickness last?” is a common question about nausea.
Photo: Johnér

When does morning sickness usually start?

Morning sickness usually starts by the 4th to 7th week of pregnancy, however it can start as early as the 3rd week and later than the 10th week

Read more! 6 morning sickness remedies to try

How long does morning sickness usually last?

Morning sickness is different for each person and each pregnancy, so specifying the exact time frame for morning sickness is impossible. However, on average morning sickness improves by the 14-16th week of pregnancy and most women say it is much better or completely gone by the 20-week mark.

Is morning sickness a good sign?

In general, morning sickness is considered to be a sign of a healthy pregnancy. With that being said, a lack of morning sickness by no means indicates an unhealthy pregnancy. Studies have shown that women who suffer from vomiting during the first trimester of their pregnancy have a slightly lower risk of miscarriage.

Is morning sickness worse with twins?

Women pregnant with twins often say that their morning sickness was worse with twins than with their other pregnancies. Researchers believe that the hormone levels, which may cause morning sickness, are at much higher levels when women are expecting multiples. This can increase morning sickness symptoms and can even cause morning sickness in women who have not suffered from nausea in previous pregnancies.

Also read: Pregnancy diet: what to eat when pregnant

Can you have morning sickness and not be pregnant?

Yes, it is possible to have morning sickness and not be pregnant. However, most cases where this happens are usually triggered by food allergies, indigestion issues, high stress, or poor diet. Regardless of what you think the cause is, you should seek the advice of your midwife or doctor if you are suffering from morning sickness on a regular basis and are not pregnant.

Can morning sickness last all day?

Morning sickness is bizarrely named because it can occur at any time of the day (however it is most common in the morning). With this in mind, it is not uncommon for people to have bad morning sickness spells where it lasts several hours into the day and sometimes the entire day. If your morning sickness consistently lasts large portions of the day you should contact your doctor.

When is morning sickness the worst?

The severity of morning sickness is different for each person and each pregnancy, however on average morning sickness is worst between the fourth and seventh week of pregnancy. Most women will feel the most sick when they go long periods between meals (such as from dinner to breakfast) or if they eat a greasy/hard to digest meal.

Find out what your triggers are

Can morning sickness come and go?

Morning sickness can occur at any time of the day and each person can have different triggers, which makes them feel ill (such as particular odours, tasks, etc.). With that in mind, it is likely that your morning sickness can disappear and suddenly come back at any time of the day. It is best to find out what your triggers are and avoid them to prevent you from feeling ill as frequently.

Can morning sickness happen at night?

Yes, morning sickness can occur at any time of the day (even at night). While nighttime morning sickness is less common, it is something many people with morning sickness experience.

Can morning sickness predict the gender?

Several studies have shown that women who suffer from severe morning sickness, known as hyperemesis gravidarum are slightly more likely to have a girl than a boy. Research has shown that girls are born in 53-56% of pregnancies with severe morning sickness.

Will you miscarry if you don’t have morning sickness?

While research has shown that women with morning sickness have a less chance of miscarriage, it doesn’t mean that you will miscarry if you don’t have morning sickness. Miscarriage is only slightly less likely in women who have morning sickness and not having morning sickness shouldn’t lead to a fear of miscarriage.

Katie Hilton on morning sickness

Katie Hilton

Works as: A midwife, health visitor, parenting expert, writer. “My work couldn’t be better, I absolutely love working with families and supporting them throughout one of the most exciting transitions in their life!”

Family: Husband Richard, Benjamin who is 6, a chocolate labrador called Buttons, and our guinea pigs Fred and Oscar. Our house is like a zoo!

Interests: Family obviously, we also love travelling and experiencing new cultures, cooking and reading.