If you feel that your stomach is getting smaller in the 4th month of pregnancy, you need to pay attention to whether there is any uncomfortable phenomenon, and you need to do ultrasound to check the growth and development of the fetus. If the ultrasound examination of fetal growth and development is normal, there is no abnormal uncomfortable symptoms, do not need special treatment, is a normal performance. Because in the first three months of pregnancy, due to pregnancy reaction will show nausea, vomiting, bloating or acid reflux, belching, hiccups and other digestive symptoms, in three months after the pregnancy reaction stops, the diet is back to normal, the bloating phenomenon is obviously reduced, will feel the belly smaller, as long as the examination of everything is normal, do not need to be overly nervous and worried.