Whether ectopic pregnancy can be seen by doing ultrasound varies from person to person and cannot be generalized, some can be seen and some cannot be seen, as follows: 1. Can’t be seen: Because some people have ectopic pregnancy with a relatively short period of menopause and then rupture occurs, with sudden small stomach pain, small amount of vaginal bleeding, and symptoms of shock. In this case, the pregnant sac in the fallopian tube has broken, so when doing ultrasound, you will often see a large amount of pelvic fluid, and the sac cannot be seen on top of the fallopian tube, so it is difficult to be detected at this time, and the diagnosis is usually made based on clinical symptoms. 2. Can be seen: If the person is more than 40 days pregnant when rupture has not occurred, and a small pregnant sac has been found on top of the fallopian tube when doing ultrasound. It can usually be seen by doing a cath lab.