Once the menstrual period comes and the pregnancy is successful, the blood vessels in the pelvic cavity provide good blood flow for the development of the embryo, so the discomfort of PMS can continue, and the hidden pain in the abdomen and breast tenderness are normal. It is even possible to have a small amount of vaginal bleeding. However, pre-eclampsia, ectopic pregnancy, or other gynecological diseases need to be ruled out and prompt medical attention should be sought. 1. Firstly, blood chorionic gonadotropin (HCG) or urine pregnancy test will be tested to determine pregnancy. 2. Ultrasound examination will be performed to find out whether a gestational sac is present in the uterus and to determine whether intrauterine conception is occurring. If no gestational sac is seen, is it late ovulation, the days of pregnancy are still small and the gestational sac failed to appear, or did the gestational sac run outside the uterus? If the HCG is rising, the pregnancy is proved to be intrauterine, but not in the uterus, and it is necessary to check for abnormal masses in both adnexa. 3, intrauterine can be seen in the gestational sac, a small amount of vaginal bleeding, 2-3 days disappeared, you can continue to observe the state of pregnancy, if the bleeding continues for a long time, the amount has a tendency to increase, abortion needs to be diagnosed and handled by a doctor. 4, such as a cesarean delivery again early pregnancy, the emergence of pain in the abdomen accompanied by bleeding, need to be particularly alert to early pregnancy at the uterine scar, ultrasound can be clearly diagnosed, the uterus is not seen in the fetal sac, the fetal sac in the lower part of the uterus scar, this is a special ectopic pregnancy, the risk is very high, can not be arbitrarily self-preservation, must be clearly diagnosed by the doctor, and timely give the corresponding treatment Therefore, in about 35 days of menopause, the emergence of Therefore, if you have symptoms similar to PMS, you can continue to observe, but if you have symptoms beyond PMS, you should seek medical attention in time.