Morning sickness is a common symptom experienced by many pregnant women. It is characterized by nausea, with or without vomiting, and can occur at any time of the day or night. The exact cause of morning sickness is not known, but it is believed to be a combination of physical and chemical changes that occur during pregnancy. Some possible causes of morning sickness include:

• Hormonal changes, including high levels of hormones such as estrogen and human chorionic gonadotropin (HCG) .
• Fluctuations in blood pressure, particularly lowered blood pressure.
• Changes in metabolism, including altered metabolism of carbohydrates.
• Emotional stress, fatigue, traveling, or some foods can make the problem worse.

Morning sickness is most common during the first three months of pregnancy and typically starts before nine weeks. Symptoms usually improve by the middle or end of the second three months of pregnancy. While morning sickness can be uncomfortable, it is not harmful to the baby unless it causes severe dehydration or weight loss.

There are several ways to manage morning sickness, including:

• Eating small, frequent meals throughout the day.
• Avoiding foods and smells that trigger nausea.
• Drinking plenty of fluids.
• Getting plenty of rest.
• Trying ginger products, which have been proven effective against morning sickness.
• Taking vitamin B-6 supplements (pyridoxine) or drugs such as doxylamine (Unisom) .

If morning sickness becomes severe and causes serious fluid loss or loss of ...