Normal pregnancy is 40 weeks, and the entire pregnancy lasts a total of 280 days and 10 gestational months. The date of pregnancy is usually calculated based on the last menstrual period, which is more accurate. In addition, through the ultrasound examination to see the size of the gestational sac, whether it is consistent with the pregnancy week, if it does not match with the pregnancy week, this may be the fetus is not well developed, or may be over-nutrition caused by the fetus is too large, as long as the baby’s development is normal there is no need to worry about, and do a good job of regular obstetrics examination can be. During pregnancy, it is best to have balanced nutrition and not to be anorexic or partial to food, so as not to cause small fetal development due to malnutrition. Can not overeat, if overeating will cause obesity during pregnancy, but also easy to cause the fetus is too large to affect the smooth delivery. During pregnancy, you need to eat more vegetables and fruits in order to keep your bowels smooth. In addition, you can also supplement the vitamins needed during pregnancy, which is very beneficial to the development of the fetus.