Normal contractions have a certain rhythm, polarity and consistency, and have a corresponding intensity and frequency. When abnormalities occur, they are called labor abnormalities and are divided into three types: weak contractions, uncoordinated contractions and hyperactivity, with weak contractions being the most common. Weak contractions often prolong the labor process, such as more than 24 hours, which is called “stalled labor”. The uterus contraction force is weak, the tension is reduced, the contraction duration is short and the interval is long, even during the contraction the uterine wall is not too hard, the mother is mostly uncomfortable, but the labor process is too long, mental anxiety and fatigue may occur. If the membranes are not broken, there is no adverse effect on the fetus. The main reason for this is that the uterus wall is overstretched, and there are many women with twin pregnancies, too much amniotic fluid, huge babies, hypoplastic or malformed uterus, which can affect the contraction force and the contraction force of the abdominal wall muscles and abdominal muscles and affect the delivery. When you are pregnant with twins, you are prone to stalled labor due to uterine contraction during labor, and you can also suffer from antepartum hemorrhage due to early placental abruption, and postpartum hemorrhage due to excessive uterine elongation and placental oversizing, and poor uterine contraction after delivery, so you must be hospitalized for delivery so that abnormalities can be handled in time. Excessive amniotic fluid Due to excessive amniotic fluid, the risk of umbilical cord prolapse (meaning that the umbilical cord comes out of the cervical opening) or placental abruption at the time of water breakage will also be higher. In both cases, a caesarean section (cesarean section) is needed immediately. This is why your doctor will tell you to go to the hospital early for delivery when you have too much amniotic fluid. Or, if your water breaks before labor starts, your doctor will have you admitted to the hospital right away. In addition, the possibility of postpartum hemorrhage increases because your uterus is overstretched and may not be able to contract well, resulting in abnormal labor. Therefore, your doctor will also monitor you closely after you give birth to your baby. Huge baby Nowadays, people prefer normal delivery, so if the fetus is too big, it may lead to tearing of the birth canal during delivery, and in serious cases, the uterus may rupture or even the bladder. In addition, too large a fetus can also bring the woman’s life at risk, because too large a fetus will delay the contraction of the uterus after delivery, and eventually the abnormal productivity will lead to the possibility of postpartum hemorrhage, which can be life-threatening in serious cases. Women with a malformed uterus, especially those with a unicornuate uterus, whether conceived through assisted reproductive technology or naturally, are more likely to suffer complications during pregnancy and delivery than women with a normal uterus, and if the shape of the uterine cavity is abnormal, most babies will be in a breech position in the uterus instead of the normal The baby will be in a breech position instead of the normal head-down position. If your baby is in a breech position, your doctor will recommend a cesarean section because it is considered the best way to deliver a breech baby and a normal delivery is more difficult.