Ectopic pregnancy can be measured with test paper pregnant, but not measured is ectopic pregnancy ah

Ectopic pregnancy can be detected with test paper pregnant, but can not determine the intrauterine pregnancy or ectopic pregnancy, so want to confirm whether ectopic pregnancy, can be in menopause about 45 days to go to the hospital to do a uterine color ultrasound examination, if you do not see the pregnancy sac, is ectopic pregnancy, to do abortion surgery.