The first symptoms of pregnancy are not common to everyone, and they vary greatly from person to person. Some of them are milder, others are more severe. Also, the first symptoms may vary from pregnancy to pregnancy. In the early stages of pregnancy, due to changes in hormone levels, pregnant women may experience breast enlargement, frequent urination, small amount of vaginal bleeding, as well as nausea, vomiting, poor appetite, headache, dizziness, emotional instability, drowsiness, weakness, and general discomfort. Not every pregnant woman shows all of the symptoms, but only some of them. Some pregnant women have very severe symptoms, such as nausea and vomiting, to the point that they cannot eat and need to be helped by a doctor. Therefore, it is important to seek medical attention if you experience these discomforts in the early stages of pregnancy, so that you can safely get through the early stages of pregnancy under the guidance of your doctor.