Pregnancy after taking progesterone capsules does not affect normal pregnancy, because progesterone capsules are natural progesterone, which does not adversely affect the development of the gestational sac, but on the contrary, it also replenishes the progesterone level in the body, inhibits smooth muscle contraction and has a fetal preservation effect. For some women with luteal insufficiency leading to preterm miscarriage or using assisted reproduction techniques, progesterone capsules need to be routinely supplemented. Progesterone capsules are widely used in clinical practice, for example, women with premature ovarian failure who have low estrogen and progesterone levels in their bodies need to take progesterone capsules orally under the precursor of estrogen supplementation, or patients who have dysfunctional uterine bleeding are treated with progesterone capsules to stop bleeding. The use of progesterone capsules in patients with prolonged periods or amenorrhea can promote the endometrium to change from the proliferative phase to the secretory phase to facilitate the onset of menstruation.