After the fertilized egg is successfully implanted, there may be back pain and backache, because the successful implantation of the fertilized egg means the pregnancy is successful, so after pregnancy, women may have obvious backache due to the congestion of the uterus, and there may also be hidden pain in the abdomen, falling, and other sensations of menstruation. However, a woman with normal pregnancy will not show vaginal bleeding, nor will she have persistent pain in the lower abdomen. For women who have fertilized eggs in the fallopian tubes, the symptoms of low back pain may be more obvious and there may also be severe back pain. There are many reasons for back pain, and it is not only caused by fertilized egg implantation, for example, overly strenuous activities or heavy lifting or even prolonged bed rest can lead to it, so the appearance of back pain can not be a direct judgement of the success of the implantation of fertilized egg.