Nausea is an uneasiness of the stomach that often comes before vomiting. Vomiting is the forcible voluntary or involuntary emptying ("throwing up") of stomach contents through the mouth. Nausea and vomiting are not diseases, but they are symptoms of many conditions such as: Motion sickness or seasickness, Early stages of pregnancy (nausea occurs in approximately 50%-90% of all pregnancies; vomiting in 25%-55%) Medication-induced vomiting, Intense pain, Emotional stress (such as fear). Try this t