Most fetuses are born around 245 to 280 days after conception of the sperm and egg.
Most sperm and eggs combine on the day of ovulation to form a fertilized egg, which develops into a fetus inside the body. The fetus develops into a fetus in the body. Most fetuses are delivered around 40 weeks of pregnancy, about 280 days from the date of the last menstrual period, and 266 days from the formation of the fertilized egg. 37~42 weeks of pregnancy delivery is pregnant full-term delivery, the formation of fertilized egg is calculated about 35~40 weeks. About 245~280 days.
Births at 28-36+6 weeks (182-244 days after fertilization) are preterm births, in which the fetus is not yet sufficiently developed and the survival rate decreases. Births after 42 weeks of gestation (280 days after fertilization) are overdue pregnancies, which are prone to neonatal respiratory distress, fetal overcooking syndrome, and increased perinatal morbidity and mortality.
If there is any abnormality in the date of delivery of the fetus, it is necessary to consult a doctor in time, check the expected date of delivery under the guidance of the doctor, and give appropriate treatment.