In my recent research, I delved into the role hormones play in causing nausea and vomiting during pregnancy. It's fascinating to learn that pregnancy hormones, specifically human chorionic gonadotropin (hCG) and estrogen, are largely to blame for this discomfort. These hormones surge during early pregnancy and can stimulate the part of the brain that controls vomiting, leading to morning sickness. While it can be tough, remember this is typically a sign of a healthy pregnancy. It's always important to seek medical advice if the vomiting becomes severe, as it could be a condition called hyperemesis gravidarum.