Women who are pregnant for one month will not have the manifestation of an enlarged belly, and this situation may be caused by diet and other factors. One month of pregnancy, usually the gestational sac in the uterine cavity bed, the uterus for the normal size, there is no obvious enlargement changes, will not cause the phenomenon of the stomach to become larger, usually in about four months of pregnancy before the performance of abdominal enlargement. If you are newly pregnant with an enlarged abdomen, you may have abdominal distension, caused by catching a cold or consuming potatoes, sweet potatoes and other foods that are easy to bloat, so you need to pay attention to abdominal warmth, and you can also massage your abdomen clockwise to promote the expulsion of flatulence. In addition, hyperemesis gravidarum may also lead to abnormal enlargement of the abdomen, which needs to be dealt with as soon as possible. Pregnant women should pay attention to regular ultrasound examination to clarify whether the development of the fetus is normal or not, once abnormalities occur, according to the doctor’s recommendations for targeted treatment.