In the early stage of pregnancy, the phenomenon of body fever will occur. Due to the increase of estrogen and progesterone secretion in the body after pregnancy, the body temperature of pregnant women will have a mild increase, which is about 0.5℃ higher than the usual body temperature, especially for sensitive pregnant women, they will feel the body fever, which does not cause great impact on the body. In the early stage of pregnancy, the body may also be sore and weak, and you may want to sleep, accompanied by early pregnancy reaction and pregnancy vomiting. If you have a fever at the beginning of pregnancy, you should pay attention to distinguish between physiological and pathological. If you only have a fever and no other discomfort, such as sneezing, runny nose, coughing and other symptoms, it is normal, but if you have symptoms of cold, you should go to the hospital in time to check.