There is a well-known symptom of pregnancy known to be very common amongst women, called morning sickness. This refers to the nausea and vomiting experienced by expectant mothers, usually during the first few weeks of pregnancy. It's called morning sickness because it is more likely to happen in the morning, but technically, it can happen at any time of the day. It can be caused by hormonal changes, increased production of oestrogen and progesterone, sensitivity to smell, certain foods and fluids, etc. It might stop by the end of the first trimester of pregnancy, but for some women, it can persist throughout the gestation period of their pregnancy. To cope with morning sickness, expectant mothers should eat their meals little by little, frequently, and stay hydrated and rested. For severe cases of morning sickness, medical intervention will be required. By understanding morning sickness, expectant mothers can avoid the inconvenience of this common symptom and manage their condition better.