In the absence of bleeding, there is also the possibility of fetal abortion, but the chances are not very high, as the chances of fetal abortion itself are not very high under normal circumstances. Fetal abruption, also known as embryonic arrest, is the death of a fetus in the uterine cavity during early pregnancy for various reasons. If the placenta is not aborted, it does not necessarily bleed, so vaginal non-bleeding does have the possibility of abortion, especially the first three days of abortion can be without vaginal bleeding and abdominal pain, and it is more accurate to detect whether abortion by ultrasound. The common signs of fetal abortion include the following: 1. The most common manifestations are abdominal pain and vaginal bleeding, which are caused by the inability of the gestational sac or embryo to develop normally in the case of fetal abortion; 2. As the hormone level in the body of the pregnant woman decreases after fetal abortion, the gastrointestinal irritation is weakened, which can lead to the manifestation of reduced early pregnancy response. There are many reasons for embryonic abortion, such as endocrine disorders, gynecological inflammation, abnormal uterine structure and chromosomal abnormalities, etc. You should go to the hospital in time to check the cause and identify the cause and then treat the cause to avoid another abortion in the next pregnancy. During pregnancy, strengthen the diet and nutrition, do not exercise strenuously, and pay attention to getting enough sleep.