Morning sickness typically begins early in pregnancy, usually between the 4th and 7th week. For most women, it tends to improve or go away around the end of the first trimester, roughly between 13 and 20 weeks of pregnancy

. The most intense symptoms often peak between 8 and 10 weeks

. However, the duration can vary. While many women find that morning sickness settles by 16 to 20 weeks, some may experience it longer, sometimes even throughout the entire pregnancy in rare cases

. Severe morning sickness, known as hyperemesis gravidarum, may persist longer and requires medical attention

. In summary:

• Starts: Around weeks 4 to 7
• Peaks: Around weeks 8 to 10
• Usually ends: By weeks 13 to 20 (end of first trimester to early second trimester)
• Can last longer: For some, symptoms persist beyond 20 weeks or throughout pregnancy in rare cases

If symptoms are severe or prolonged, consulting a healthcare provider is recommended.