Symptoms you need to pay attention to when you are more than one month pregnant. When you are more than one month pregnant, the embryo has just begun to form. This is the most critical and sensitive stage of fetal development. Therefore, expectant mothers need to pay special attention to the following symptoms in order to protect the health of the mother and fetus in a timely manner. 1. Breast swelling and pain: Pregnant women will have symptoms of breast swelling and pain in about a month, which are manifested as breasts becoming heavy, sensitive, swollen and painful. This is because the breasts have begun to become fuller in preparation for milk production. . 2. Pregnancy reaction: Many expectant mothers will have pregnancy reaction syndrome in the early stages of pregnancy.