Three months of the fetus has developed, pregnant women uterus gradually increased, 12 weeks of hand measurement of the uterus height in the pubic symphysis on the 2-3 transverse fingers. Three months of the fetus limbs gradually clear, the shape has begun to change, at this time you can feel the bottom of the uterus above the symphysis pubis, the fetus at this time the length of 9-10cm or so, lighter weight, limbs began to move, nerve cell proliferation accelerated, the external stimulus will have a response. As the fetus grows up, the uterus can be seen, known as the apparent pregnancy. After three months, generally the fetus can move all four limbs in the stomach, and some activities of the fetus can be seen under the ultrasound during the imaging examination. Pregnant women are advised to pay attention to their own physical abnormalities during pregnancy, and at the same time, not to be overly anxious, and to seek medical help for any problems that arise.