Fertilized egg implantation most people have no reaction, a few people will have pain in the lower abdomen, a small amount of bleeding in the vagina, a mild increase in body temperature, fatigue and so on, due to the different physique of each person, the symptoms are not the same. 1. Abdominal pain: after the fertilized egg is deposited, it invades the uterine lining, which can cause pain and swelling in the abdomen, the degree of which is mild and will not be severe pain. 2. Small amount of vaginal bleeding: After the fertilized egg is deposited, it stimulates the uterine lining, which can cause a small amount of endometrial shedding, and a small amount of vaginal bleeding may occur. 3. Elevated body temperature: After the fertilized egg is deposited, the estrogen and progesterone in the body are elevated, and the body temperature is affected by the sex hormones, which will be 0.3-0.5℃ higher than the basal body temperature. 4. Fatigue: After the fertilization of the egg, due to the changes in sex hormones, it can cause general fatigue and other conditions. Each person has a different physical condition, the performance is also different, from the performance alone can not determine whether the fertilized egg implantation, need to check the blood HCG to determine.