If a woman’s blood hcg and progesterone are checked after pregnancy, suggesting that the progesterone is below 5, it is usually not recommended to carry out fertility treatment, but to let nature take its course and allow a natural abortion. For women who are pregnant and want to have children, it is often necessary to check the blood hcg and progesterone to indirectly determine the growth and development of the embryo, normally the progesterone value is between 30 and 40, usually not less than 25. However, if a woman’s blood hcg and progesterone test indicate that the progesterone level is less than 5, this often means that the pregnancy is stillborn, so it is not recommended to keep the pregnancy alive, but to let it miscarry naturally, because even if the pregnancy is kept alive, there is no point. If there is no ultrasound to confirm the diagnosis of intrauterine pregnancy, then it should also be considered as a manifestation of ectopic pregnancy, which is also not recommended to preserve the pregnancy because it may lead to the rupture of the ectopic pregnancy mass and cause heavy bleeding and severe abdominal pain. Therefore, not all women need birth control when they have a pre-eclampsia, especially if their progesterone is less than five, which is not useful or meaningful.