Ectopic pregnancy is an abnormal pregnancy caused by a fertilized egg that does not settle inside the uterine cavity, but settles in an area outside the uterine cavity. Because an ectopic pregnancy also has a fertilized egg, pregnancy can be detected with a pregnancy test or a blood HCG test. As long as there is a fertilized egg, there will be chorionic gonadotropin secretion in the body, and this hormone can reach a high concentration in about a week, so no matter whether it is ectopic or intrauterine pregnancy, pregnancy can be detected by using pregnancy test strips to test the urine or by drawing blood to do the blood HCG test. The diagnosis of ectopic pregnancy is not to use pregnancy test paper to test whether pregnancy, but need to go to the hospital about 45 days after menopause to do ultrasound examination of the uterine adnexa, to see whether there is a pregnancy sac in the uterine cavity. If there is no pregnancy sac found in the uterine cavity, and accompanied by symptoms such as pain on both sides of the abdomen and irregular vaginal bleeding, then the possibility of ectopic pregnancy is very high. Blood HCG test can also be done to assist in the diagnosis, because the environment of intrauterine pregnancy is better than that of extrauterine pregnancy, so if it is an intrauterine pregnancy, the level of blood HCG will double every other day, and if it is an ectopic pregnancy, the level of blood HCG will increase at a slower rate. Therefore, to test that you are pregnant with a pregnancy test, it is important to have an ultrasound to determine the location of the gestational sac. The possibility of ectopic pregnancy can only be completely ruled out if the sac is found in the uterine cavity.