Generally, there is no fever at the time of implantation. After implantation, the body temperature will be 0.3-0.5℃ higher than normal, but within the normal range, there will not be any uncomfortable symptoms. Fertilized egg will cause slight abdominal pain, bleeding, etc. This is a normal reaction caused by the implantation, generally do not need to be treated. If you have a fever, it may be caused by a bacterial or viral infection. It is best to go to the hospital for a routine blood test and choose the appropriate treatment based on the results. If the fever is low, you can use warm water to wipe the physical cooling, if the fever is high, it is best to use fever-reducing drugs under the guidance of the doctor, but the use of drugs during pregnancy should be cautious, it is best to choose drugs with fewer side effects is relatively safe. At the same time, it is recommended to pay attention to drink more water, if the bacterial infection or viral infection, also need to cooperate with anti-inflammatory drugs or antiviral drugs treatment.