The term “implantation” generally refers to the implantation of a fertilized egg, which may cause vague pain in the abdomen after implantation, but there are individual differences. Not all patients will have hidden pain in the abdomen when the pregnancy is implanted, and most patients will not have special clinical manifestations when the pregnancy is implanted. However, due to individual differences, a small number of patients may experience vague abdominal pain because the fertilized egg will invade the uterine lining during implantation, leading to rupture of the uterine lining and a small amount of shedding of the uterine lining. Some women may also experience a small amount of vaginal bleeding, which is a normal physiological phenomenon and does not require special treatment. If abdominal pain is uncomfortable, it is recommended that the patient consult a doctor in time to clarify the cause, and do not take medication without authorization, in order to avoid adverse effects.