After a week of taking dydrogesterone tablets progesterone instead of falling, considering that the drug is not well absorbed, embryonic dysplasia and so on. 1. bad drug absorption: dydrogesterone tablets is a progestin, mainly for the treatment of endogenous progesterone insufficiency caused by the disease, under normal circumstances after supplemental progesterone, the body’s progesterone level will rise, if on the contrary, consider that the drug is not well absorbed, it is recommended to change the way of administration, such as injection of progesterone and so on. 2. Embryonic dysplasia: under normal circumstances, the embryo will release gonadotropins after implantation, which can maintain the function of the corpus luteum and promote the secretion of estrogen and progesterone, if the embryo is not well developed, the low level of gonadotropins will also cause low progesterone, even if through the supplementation, but the formation of the body is less, it will also cause progesterone to fall, resulting in preeclampsia. After taking a week of dydrogesterone tablets progesterone instead of falling, there may also be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.