Implantation cooling
Implantation cooling refers to a slight drop in the mother\’s basal body temperature during the implantation process of a human or animal embryo. Implantation cooling is an indicator in natural pregnancy monitoring and is sometimes used by women trying to conceive as a possible sign of early pregnancy.
After ovulation, a woman\’s basal body temperature will rise. This is because the progesterone secreted by the corpus luteum (the ovarian structure formed after ovulation) causes the body temperature to rise.
If the fertilized egg implants successfully, the corpus luteum will continue to secrete progesterone to support pregnancy. At this time, there may be a small temperature drop, and then the body temperature will rise again and remain at a high level. This small drop is considered to be implantation. Bed cooling. 
Principle of implantation cooling
The principle of implantation cooling is very simple, because the temperature of the human body changes from low temperature to high temperature too much, but there will be a very low temperature in too many stages. This is usually your ovulation day, because when the follicle ruptures, estrogen will suddenly The decrease in estrogen will also affect body temperature.
After a woman’s body temperature enters a high-temperature zone, the lifespan of the corpus luteum is 14 days, so it will always maintain a high-temperature period of about 12 days. When it is found that between the 6th and 10th days after ovulation, one day The body temperature drops suddenly, and then rises significantly the next day. This sudden low temperature is the implantation cooling.
It is worth noting that the concept of implantation cooling mainly comes from self-monitoring and folk experience. This phenomenon is not widely recognized in scientific research, so it is not used as a formal pregnancy indicator in medical practice. If there is a possibility of pregnancy, it is recommended to use scientific testing methods to confirm. 
On what day does implantation cooling occur
Implantation cooling is generally thought to occur during embryo implantation, which generally occurs between days 6 and 12 after fertilization. Therefore, if there is something called \”implantation cooling,\” it may occur during this time period.
However, it should be noted that implantation cooling is not a method widely recognized by the scientific community.phenomenon, and there is no conclusive evidence that it is a universal physiological event.
In practice, many women trying to conceive will monitor their basal body temperature (BBT) and record it on a temperature chart to help track ovulation and possible signs of pregnancy. If a slight drop in body temperature is observed during the post-ovulation hyperthermia, some women may interpret this as implantation cooling. However, this cooling may also be caused by normal body temperature fluctuations, measurement errors, or other physiological changes.
Summary
Due to the lack of scientific evidence, implantation cooling should not be considered an effective method of confirming pregnancy.
If there is a possibility of pregnancy, the most accurate way to confirm is through a home pregnancy test strip to test hCG (human chorionic gonadotropin) levels in the urine, or through a blood test performed by a medical professional.
