The early manifestations of a new twin pregnancy are similar to those of a singleton pregnancy, with no special signs, but with the emergence of early pregnancy reactions, it is possible that early pregnancy reactions such as vomiting and nausea are more severe, progesterone and blood HCG values are relatively high, and two gestational sacs can be found on ultrasound examination. 1, because the two fetuses grow together, the placenta area is larger than that of a singleton pregnancy, and early pregnancy reactions such as nausea, vomiting and anorexia may occur earlier and more severely. Therefore, it may cause electrolyte disorders in the body, and in serious cases, acidosis may occur, which requires timely consultation and rehydration treatment. 2. When blood tests are done in early pregnancy for twin pregnancies, relatively high progesterone and HCG values can be found. 3. In case of identical twins, it can be found around 13 weeks of gestation, showing 2 heartbeats. In addition, the uterus enlarges faster than in a singleton pregnancy, and a twin pregnancy may reveal a uterus similar in size to that of a normal singleton pregnancy at the 11th week of gestation. Once it is clear that you are pregnant with twins, pregnant women are advised to exercise appropriately, try to adjust their diet and lifestyle habits to suit the needs of the pregnancy, and supplement their nutrition to meet the needs of fetal growth and development. In addition, those with twin pregnancies need to strengthen prenatal testing and seek medical attention in case of discomfort.