An oversized gestational sac is usually not a problem, as long as the yolk sac, fetal heart, and buds are growing and developing normally, there is usually no effect on the fetus, so there is no need to be particularly worried. The problem with a large gestational sac may be that the sac is too large, which means that ovulation may have occurred earlier, and early ovulation leads to earlier formation and implantation of the fertilized egg, which is why the sac is larger than that calculated at the time of menopause, and this is a normal phenomenon; The large size of the gestational sac also indicates that the embryo is developing well, the nutrition during pregnancy is sufficient, the woman’s physical quality and the uterine environment is good; at the same time, the large size of the gestational sac does not exclude the possibility of having twins or remembering the wrong last menstrual period. If you have a large gestational sac, it is recommended to review the ultrasound in two weeks, and during pregnancy, you should do a good job of pregnancy checks, pay attention to rest, reasonable diet, and if there is discomfort, go to the hospital as soon as possible.