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Dealing With Morning Sickness

Morning sickness is a very common phenomena occurring in about 70-80% on pregnancies. In general it is mild and self limiting. The majority of women does not need medical help and can be managed at home.

What causes morning sickness in pregnancy?

The cause of morning sickness during pregnancy or why some women seem to have severe symptoms remains largely unknown. Many researchers relate it to the hormonal changes that occur during early pregnancy. Estrogen level is noted to be more elevated in women with vomiting in early pregnancy.

Women who have twins or triplets seem to have a more severe form of morning sickness, as do women who have ‘molar pregnancy’ which is an abnormal form of pregnancy. It is recommended that women who suffer from ‘hyperemesis gravidarum’ which is term used for a severe form of morning sickness, to have an ultrasound scan of the pregnancy to exclude the possibility of twins, triplets or molar pregnancy. Other possible causes of severe morning sickness include urinary tract infection, gastroenteritis and food poisoning.

Women are advised to see their doctor if they have severe vomiting in pregnancy and is unable to take food or drink adequately.

How long will it last?

Nausea and vomiting usually begin around 6th week of pregnancy. Although it commonly occurs in the morning, it can happen at any time of the day. About 80% of women will stop having symptoms around the 12th week, and the rest usually feels much better after the 16th week. However, a few may experience it throughout pregnancy.

Health effects of morning sickness in pregnancy

Women who have mild nausea and vomiting in early pregnancy should not be worried as it is unlikely to cause any harm to them or their fetus. However, if the vomiting is severe and she is unable to take food or drink then she needs to get admitted to hospital.

Women with hyperemesis gravidarum are usually dehydrated and would need intravenous fluid in the hospital to correct it. If the condition is not treated, it may result in ketosis or metabolic acidosis and this might be harmful to the fetus and the mother.

Having morning sickness-Why me?

The majority of women would probably experience morning sickness during their pregnancy and only a small group would be lucky enough not to have it. The symptoms may be worse in some women compared to others. Some of the known factors that predispose the woman to severe morning sickness include:

  • Having twins pregnancy or multiple pregnancy
  • Having had morning sickness in previous pregnancy
  • Having family history of morning sickness

Triggers for morning sickness in pregnancy

Many pregnant women may notice that certain conditions, food or smell may make them feels sick. Some common triggers include:

  • Smell of odours like perfume, coffee, cigarette smoke
  • Smells during cooking or frying
  • Becoming very tired
  • Feeling anxious or worried

Tips to reduce morning sickness in pregnancy

Morning sickness may be relieved by dietary modifications such as :

  • Drinking and eating frequently, but in small amount. Have 5-6 small meals a day and this can ensure adequate hydration and nutrition
  • Eat before rising is usually helpful e.g. when first wake up, eat a few crackers then rest for 15 minutes before getting out of bed
  • Eat immediately when you feel like eating certain food and whenever you want to
  • Avoid eating oily, spicy and fried food
  • Avoid eating food that make you feel sick or nauseated
  • Avoid drinking lots of fluids during eating or immediately before or after meals
  • Drink liquid between meals to minimize vomiting
  • Taking ginger (teas, preserve, ginger ale and capsule form) has been shown to be effective in reducing nausea and vomiting in pregnancy

Get enough rest, a lot of fresh air and enough support from friends and family members.

Vitamin supplements

Taking multivitamin that contains pyridoxine (Vitamin B-6) at the time of pregnancy may help to decrease the severity of nausea and vomiting of pregnancy. There are some evidence to suggest that pyridoxine (vitamin B-6) supplements help reduce nausea and vomiting. The suggested dose is 25-50 mg every eight hours.

If you suspect the vitamin supplement that you are taking is causing more nausea, you can try to take it at night before sleep. If this doesn’t help, talk to your doctor for the possibility changing to other types of vitamin preparation. Soft gel form of vitamins is usually tolerated better.

Who can help me with morning sickness in pregnancy?

An understanding husband and family members with regards to the condition helps a great deal. However, if the symptoms persist and you have difficulty coping with it, then you should go to your doctor or the nearest clinic, to get support and counselling. You might also be given medications to help reduce the nausea and vomiting. Occasionally, your doctor might do a blood test to check for electrolyte imbalance and urinary test to check for ketones.

When to seek medical care

You should seek medical care if :

  • You are unable to take or hold any liquids for more than 24 hours
  • If your vomiting associated with
      • Fever
      • loose stool
      • abdominal pain
      • headache

    (Other causes of vomiting may have to be ruled out)

References

  1. Quinlan,J.D.,& Hill,D.A.(2003). Nausea and vomiting of pregnancy. American Family Physician, 68(1), 121-128
  2. Sheehan, P(2007). Hyperemesis garvidarum: Assessment and management. Australian Family Physician, 36(9), 673-784
  3. American College of Obstetricians and Gynaecologists (ACOG) (2004). Nausea and vomiting of pregnancy. Washington (DC). Author. The American College of Obstetricians and Gynaecologists (ACOG) reaffirmed the currency of the guideline in 2009

 

Last Reviewed : 23 August 2019
Writer : Dr. Maimunah Mahmud
Accreditor : Dr. Haris Njoo Suharjono
Reviewer : Dr. Rafaie bin Amin

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