What are the first symptoms of pregnancy? The first one is menopause. It is possible that you are pregnant because you are not getting your period. The second one is feeling weak, because some people exercise a lot, so they vomit everything they eat, and their body has no energy at all, so they feel weak. The third one is the gastrointestinal symptoms, nausea, dry heaving, vomiting, etc. These are also the initial symptoms of pregnancy. Fourth, some people feel that the enlarged uterus will press on the bladder, so they will have some symptoms of frequent and urgent urination. Fifthly, the breasts will be swollen and painful on both sides. Because of the high estrogen level, it will stimulate the bilateral lobular hyperplasia of the breast, so both breasts feel much bigger, and the swelling and pain is more severe.