What are the signs before pregnancy that predict physical changes to help you better prepare for pregnancy? When trying to have a baby, some women may feel that they are pregnant, but their pregnancy test results do not show a positive result. In fact, before pregnancy, there will be many signs of changes in the body. These signs tell us what is happening in the body and help us better prepare for pregnancy. This article will explain in detail what to do before pregnancy from four aspects: body, emotion, diet, and reproductive system.