There is no such thing as how many weeks is the best to give birth; it is normal for a woman to give birth between 37 and 42 weeks of pregnancy.
Generally speaking, the expected date of delivery is 40 weeks, and the fetus is full term after 37 weeks of pregnancy, at which time the fetus has a higher survival rate even if it is born. Delivery between 37 weeks and less than 42 weeks of pregnancy is better, which is a full-term labor, and the fetus born is called a full-term baby.
Births between 28 and less than 37 weeks of pregnancy can often be called preterm, and these fetuses are born prematurely. The overall survival rate of preterm babies is not very high because their body functions are not yet developed. Deliveries at 42 weeks of pregnancy and beyond can be referred to as term pregnancies, and the mortality rate of term babies is also very high.
Therefore, it is normal for pregnant women to give birth at 37 weeks of pregnancy or less than 42 weeks. Pregnant women should take regular obstetric checkups during pregnancy to prevent preterm and term births.