Giving birth at 35 weeks gestation is considered moderately preterm, and while there may be some risks involved, many babies born at this stage go on to have healthy lives. As for the descent of the testes in a male child, it typically occurs during pregnancy or shortly after birth. By 35 weeks, most male infants will have their testes descended into the scrotum. However, there are cases where one or both testicles may not have fully descended by this time. This condition is known as undescended testicles or cryptorchidism. Factors such as premature birth, low birth weight, genetic conditions, hormonal imbalances, and certain medical conditions can contribute to delayed or incomplete descent of the testes. If your baby's testes have not descended by 35 weeks or shortly after birth, it is important to consult with your pediatrician who may recommend further evaluation and potential treatment options if necessary.