Intrauterine, ectopic pregnancy can be identified by doing ultrasound, blood test to identify, as follows: 1, ultrasound: the simplest way is to do ultrasound, women pregnant to more than 40 days, do ultrasound found in the uterus no gestational sacs, in the uterus outside the look of a gestational sac, can be diagnosed with an ectopic pregnancy. 2, blood test: women are pregnant in months is relatively small, ultrasound can not be seen, you need to do a blood test, check the body of the women’s human chorionic gonadotropin, because early pregnancy if intrauterine pregnancy this hormone usually doubles after 48 hours, but this situation can be identified. Chorionic gonadotropin, because early pregnancy, if it is intrauterine pregnancy, this hormone is generally 48 hours after the exponential growth, but ectopic pregnancy can not reach such conditions, so this situation can be recognized. Some women with ectopic pregnancies have a small amount of vaginal bleeding and a swollen belly on one side, which can also be confused with a woman with a preeclampsia.