Early pregnancy miscarriages are hard to be seen, even by specialized doctors, because early miscarriages do not lead to localized changes in the cervix. Late miscarriages, those that occur after mid-pregnancy pregnancies up to full-term delivery, can still be seen through examination because of the localized changes in the cervix, which is the most obvious mark left by induced abortion in the mid-term. In addition, due to individual differences, some people may leave stretch marks on the skin of the abdominal wall, stretch marks after a year or so will become silver-white, so it is a relatively obvious mark, but not necessarily have stretch marks of women who have been pregnant, because the phenomenon of stretch marks on the abdominal wall of the fatter women may also occur.