Early pregnancy fever of 37.5 ℃ if not persistently elevated after healing generally have no effect on the child, but if persistently elevated without healing may cause adverse effects on the child. 37.5 ℃ for low-grade fever, if through warm water scrubbing, drinking warm water and other ways of body temperature can be reduced to normal, and exclude other pathological factors, generally will not affect the growth and development of the fetus. However, if the temperature continues to rise, persistent high fever occurs, or serious infection occurs, it will cause adverse effects on the fetus. It can lead to miscarriage, and may also lead to fetal malformation, etc. You should pay attention to keeping warm during pregnancy to avoid fever caused by catching cold.