There are certain factors that make the pregnant woman more prone to morning sickness.

• History of morning sickness in a previous pregnancy
• Female fetus.This can increase the risk by about 1.5 times
• Family history of morning sickness
• Previous molar (the tissue fails to become a pregnancy) pregnancy
• Common in unplanned pregnancies
• Stress
• Multiple pregnancies such as having twins
• History of motion sickness
• Smell of certain food stuff
• Use of estrogen containing birth control pills before conceiving
• If the Patient suffers from Migraine
• Rarely, hyperthyroidism and diabetes
• Asthma