Staying in bed does not make the gestational sac grow upwards. If the pregnancy sac is in a low position, it is easy for uterine contractions or external factors to cause the risk of miscarriage. Usually, when the ultrasound examination reveals that the pregnancy sac is low, the doctor will advise the pregnant woman to stay in bed more often to rest, in order to prevent the pregnant woman from frequent uterine contractions due to too much activity and exertion, which may lead to miscarriage with the first sign of abortion, but it will not let the pregnancy sac that has already grown lower grow upwards. Moreover, for pregnant women who already have signs of miscarriage, such as vague pain in the lower abdomen and small amount of vaginal bleeding, the discomfort can be relieved by more bed rest. The position of the gestational sac is determined by the location of the fertilized egg. It is normal for the sac to be in the left, right, anterior and posterior walls of the uterus, as well as in the fundus of the uterus. If the gestational sac is near the endocervix or at the uterine horns, it is abnormal. If you are diagnosed as having a low gestational sac, you should strictly follow the precautions prescribed by your doctor, and at the same time keep your mind calm and avoid stress or anxiety, which is conducive to the normal growth and development of the fetus.