The rupture of the follicle caused by implantation will cause a relative decrease in body temperature, but since the decrease is not large, it is not always possible to detect a drop in temperature. After the fertilized egg develops into a follicle, as the follicle gradually grows, the periphery of the follicle is burst and falls off at about 6 to 7 days after fertilization, and then the embryo breaks out of the peritoneum and implants itself in the uterine lining. During this process, due to the rupture of the follicle, there will be a certain range of estrogen drop, which leads to a relative decrease in body temperature. However, there are relatively many factors that affect body temperature, such as room temperature and diet, and the relative drop in body temperature due to implantation is not significant, so it is usually difficult to detect and not always possible to measure the drop in temperature. If a pregnant woman wants to know whether she is pregnant, she can go to the hospital, and under the guidance of the doctor, improve the blood HCG and other tests to determine.