It is normal for women to have abdominal pain after taking progesterone shots, which are designed to increase the level of progesterone in the body and prevent miscarriage due to lowered progesterone levels. If a woman has abdominal pain and other aura of miscarriage, not due to low levels of progesterone, due to low levels of HCG or poor quality of the embryo and lead to spontaneous abortion, will also appear after progesterone injection abdominal pain, that is, progesterone is not 100% effective in preserving the fetus. When a woman has abdominal pain after a progesterone shot and has embryonic arrest or spontaneous abortion, she needs to terminate the pregnancy as soon as possible, and too much birth control will not allow the fetus to continue to grow and develop, and it may also lead to increased vaginal bleeding and uterine infections.