During the 1st trimester, a temperature higher than 103° F (39.5° C) increases risk of the following:
Defects of the brain or spinal cord Overview of Brain and Spinal Cord Birth Defects Birth defects of the brain and spinal cord can occur in early or late fetal development. Typical symptoms include intellectual disability, paralysis, incontinence, or loss of sensation in some... read more in the baby
Late in pregnancy, fever increases the risk of the following:
Doctors treat the cause of the fever, but women can also take acetaminophen to lower the temperature. Cooling blankets can be used in women with a very high fever.