When the position of the gestational sac is off the uterine horn, it can cause the development of the gestational sac to be delayed or even stopped, resulting in low HCG levels.
A normal gestational sac should be in the position of the uterine body for the fetus to develop normally. The corner of the uterus is at the position where the uterus meets the fallopian tubes, which is a relatively small space and cannot provide a large enough space for the development of the gestational sac, which is not conducive to the growth of the fetus.
When the gestational sac increases in size, it is easy to cause pre-miscarriage, uterine rupture or the development of the gestational sac stops, when the level of HCG in the body will be low.
When a woman with uterine horn pregnancy finds that the HCG level is low or accompanied by symptoms such as abdominal pain or abnormal vaginal bleeding, she needs to consult a doctor in time to determine whether there is any abnormality, and judge whether there is a possibility of preserving the fetus under the guidance of the doctor according to the specific circumstances.