Symptoms

Common signs and symptoms of morning sickness include nausea and vomiting, often triggered by certain odors, spicy foods, heat, excess salivation or — often times — no triggers at all. Morning sickness is most common during the first trimester and usually begins by nine weeks after conception. Symptoms improve for most expectant mothers by the mid to late second trimester.

When to see a doctor

Contact your health care provider if:

• The nausea or vomiting is severe
• You pass only a small amount of urine or it's dark in color
• You can't keep down liquids
• You feel dizzy or faint when you stand up
• Your heart races