A high fever of 39 degrees in the early stages of pregnancy may have an effect on the fetus if it doesn’t go down. A high fever of 39 degrees in pregnancy is more serious and may affect the normal development of the embryo if the temperature continues to rise and does not go down. If the cold is more serious it may cause other complications and eventually risk miscarriage, especially in early pregnancy. In the early stages of pregnancy if you choose to take unauthorized medication due to a cold and fever, the medication enters the human body and may also directly affect the development of the fetus, which may lead to embryonic malformations, affecting the development of the body, and predisposing it to congenital deficiencies. Early pregnancy found to have a high fever of 39 degrees, it is necessary to timely treatment, and regular monitoring of body temperature. If you need to use medication, be sure to do so under the guidance of a professional physician, and do not take it without authorization.