For many, the first trimester introduces the unique experience of morning sickness. While it's often called 'morning sickness,' this sensation can truly arrive at any time of day, or even linger throughout the day. It's a very common early pregnancy symptom, and understanding its patterns in these initial weeks can bring a sense of calm and clarity.
Why it shows up this trimester
During the first trimester, your body is undergoing incredible changes to support your developing baby. The primary driver behind morning sickness is often the rapid rise in human chorionic gonadotropin (hCG) – the hormone detected in pregnancy tests. Levels of estrogen and progesterone are also increasing, which can contribute to digestive slowdown and heightened sensitivity. This hormonal surge is most pronounced in early pregnancy, typically peaking around weeks 6-9, which often aligns with the most intense period of nausea and vomiting for many.

