Multiple pregnancy increases the risk for complications. More frequent visits may help detect complications early enough for effective treatment or management. The mother's nutritional status and weight should also be monitored more closely.
Aside from risks of mother's health, this can also be a financial problem because mother has to go for several ultrasounds, check ups and she has different nutritional needs compared to just carrying a single baby.
If you are having a multiple pregnancy, expect that you will feel EXTREME FATIGUE due to the bigger size of your abdomen and the movement of more babies inside your womb that can cause the inability of having a good night's sleep.