Morning Sickness Facts. More than 50% of pregnant women experience morning sickness. Morning sickness refers to the nauseous feeling you may have during the first trimester of pregnancy, which is a result of the increased hormones in your body. Morning sickness can be accompanied with vomiting. Many doctors think morning sickness is a good sign because it means the placenta is developing well. Have no fear, there are several ways to help give you morning sickness relief. Here are some steps to and alleviate your symptoms: Helpful Do’s and Don’ts. Do: Eat small meals ...