The normal blood glucose fetal enlargement of two weeks may be normal, with the pregnancy week accounting error, genetic factors, overnutrition and other factors. 1. pregnancy week accounting error: normal blood sugar fetus large two weeks may be pregnancy week accounting error, to re-verify the last menstrual period, the specific time of conception, if the pregnancy week accounting error, the fetus large two weeks is generally normal. 2. Genetic factors: the parents are taller and heavier, this kind of fetus is affected by genetic factors, it may be two weeks larger, other growth indicators are normal, there is no problem. 3. Excessive nutrition: during pregnancy, women consume high-fat, high-calorie food for a long time, and usually less activity, through the ultrasound examination, the fetus may also be larger than two weeks, other growth indicators are normal, there is no problem. In addition to the above, pregnant women’s blood sugar also need to be tested again, when the fetus is too large should take into account the impact of blood sugar, the previous glucose tolerance test examination is normal does not mean that thereafter there will be no blood sugar abnormalities. A large fetus also means that delivery is difficult and the risk to both mother and child increases, so it is important to control your own weight and the weight of the fetus during pregnancy.