If there is no abdominal pain or vaginal bleeding after a fall in the third month of pregnancy, it will not have much effect. If there is abdominal pain or vaginal bleeding, you need to be alert to miscarriage and keep the baby in a timely manner. 3 months pregnant fetus has just stabilized, after the fall if there is no vaginal bleeding and abdominal pain and discomfort symptoms, generally will not endanger the fetus, but it is recommended to try to bed rest and observation, to avoid too much tension. If after the fall pregnant women have abdominal pain and vaginal bleeding phenomenon is relatively dangerous, likely due to exogenous impact leading to miscarriage, need to go to the hospital in time to check for fetal preservation treatment. If the miscarriage is difficult to avoid, then you need to clear the uterus in time. Pregnancy is a special stage, pregnant women should pay attention to avoid wearing high heels, pay attention to safety, after the fall if there is discomfort, it is best to go to the hospital as soon as possible to do ultrasound to check whether the fetus in the uterine cavity is normal.