When does morning sickness usually peak?

According to My Wiser Health, morning sickness usually peaks during the ninth week of pregnancy. Common symptoms of morning sickness include nausea, stomach upset and vomiting.

My Wiser Health explains that morning sickness during a pregnancy can start as early as the fifth week and ends around week 15. Morning sickness is a common side effect of pregnancy plaguing 70 percent to 80 percent of women at some point during their pregnancy. A few remedies for morning sickness are to eat small meals frequently to avoid an empty stomach, get plenty of rest and eat bland foods. Some women find acupressure bands, commonly used for sea sickness, to be effective in treating morning sickness.