Fetal small two weeks is not terrible, need to be based on maternal gestational weeks, genetic factors, the presence of pregnancy complications, pregnancy with or without malnutrition and other comprehensive assessment, such as pregnant women have delayed menstruation and hereditary factors, the fetus is small two weeks is generally not terrible, such as pregnant women have pregnancy complications and malnutrition, the fetus is small two weeks is generally terrible. 1. Delayed gestational week: according to the menstrual cycle, the verification of gestational week, such as pregnant women every menstrual period is delayed for 2 weeks, the fetus is small two weeks is also normal, the fetus is small two weeks in this case is generally not terrible. 2. Genetic factors: the pregnant woman herself is weak and thin, affected by genetic factors, the fetus will also be small, generally as long as the normal development of the fetus, the fetus is small two weeks is generally not terrible! 3. pregnancy complications: pay attention to pregnant women with or without pregnancy complications, such as gestational hypertension syndrome patients fetal growth restriction, easy to lead to small fetus, there are abnormalities in the function of the placenta, umbilical cord is also easy to lead to small fetus, this case of small fetus two weeks terrible. 4. malnutrition: pregnant women during pregnancy, malnutrition, stress, can also lead to fetal small, if not timely supplementation of nutrients, easy to lead to fetal growth retardation, this situation fetal small two weeks terrible. It is recommended that pregnant women undergo regular obstetric examination, if found for maternal factors leading to fetal growth retardation, need to be given timely treatment, if necessary, close monitoring of fetal growth and development, such as jeopardizing the safety and security of the fetus, should be promptly terminated in order to avoid the occurrence of adverse pregnancy outcomes.