The pain of implantation lasts about 2 to 3 days, with variations between individuals, and the exact duration varies from person to person. The pain of implantation is caused by the combination of sperm and egg to form a fertilized egg, the process of positioning, adhesion and implantation affects part of the uterine lining, and exfoliation-like change occurs, manifesting the lower abdomen and lumbar-sacral region with slight swelling and pain and discomfort. Not every woman will experience implantation pain, and the duration of implantation pain will vary from woman to woman, most women will disappear after 2~3 days, accompanied by persistent pain, we should consider that it is caused by other reasons, not necessarily implantation pain. Some women may experience uterine contractions due to excessive stress and mental strain during the implantation of the fertilized egg, which may also cause pain and discomfort. By regulating the state of the individual, the discomfort may be alleviated. To find out whether the fertilization is successful, women can go to the hospital to determine through blood tests, urine pregnancy tests, and so on.