Common symptoms in early pregnancy and when they appear. Early pregnancy is an important time, so what are the common symptoms in early pregnancy? This article will elaborate on these symptoms in four aspects. 1. Changes in physical signs One of the earliest symptoms in early pregnancy is changes in physical signs. In the early stages of pregnancy, hormonal levels in a woman\’s body change, which leads to changes in some physical signs. These changes include: breast tenderness, headache, fatigue, irritability, changes in appetite, etc. These symptoms usually begin two weeks after conception.