Most women start feeling the symptoms of morning sickness by the sixth week after their last menstrual period. The most common symptoms in un-complicated morning sickness are only nausea and vomiting.

Immediately contact a doctor if:

• The pregnant woman has severe abdominal pain
• She vomits blood
• She passes scanty urine
• The urine is dark
• She has a high pulse rate and a racing heart
• She feels weak and faints on standing up due to sudden fall in blood pressure