There is no scientific evidence to prove the relationship between body temperature and fertilization of the egg, so it is not possible to determine whether the temperature drop is in the process of implantation or successful implantation. Before and after ovulation, the body’s estrogen and progesterone change, the basal body temperature will change, after ovulation, most women will have a high body temperature, but whether or not the fertilization and body temperature change is not a clear correlation. A more accurate indicator to determine whether the fertilized egg has successfully implanted is whether the human chorionic gonadotropin level in the blood is elevated. Human chorionic gonadotropin can also be detected in the urine when it reaches a certain concentration in the blood. If a woman who is preparing for pregnancy experiences symptoms such as elevated body temperature and fatigue, she should go to the hospital for a timely examination in order to accurately determine whether she is pregnant or not.