How many days a high temperature lasts during pregnancy varies from person to person, with most lasting for three months and then gradually subsiding, and some even lasting for the entire pregnancy. After ovulation, a woman’s body temperature will rise mildly, by about 0.3-0.5°C. If fertilization does not occur after ovulation, the temperature will drop for 10-14 days. If fertilization occurs, the temperature will continue to rise for a period of time, usually up to three months or even throughout the pregnancy, depending on the individual. The temperature usually does not exceed 37.5°C and pregnant women do not need to worry too much. However, it is important to note that if other symptoms occur at the same time, it is necessary to consult a doctor in time, and if you have been worried about the high temperature, you can also consult a doctor in time to avoid affecting the mood of pregnant women.