Won't a sudden withdrawal of lutein after the 25th day of the cycle end in a miscarriage?

Your use of lutein is designed to support the concentration of naturally occurring progesterone in the body. Progesterone is a sex hormone whose task is to allow the implantation of a fertilized egg in the uterus. Its highest concentration is observed in the second half of the menstrual cycle, and then decreases if fertilization does not occur or is maintained at a constant higher level if fertilization has occurred. It is worth remembering that in a situation where fertilization has occurred, the remnant of the follicle from which the egg cell was released is transformed into the gestational corpus luteum, which releases increased amounts of progesterone to maintain pregnancy. Depending on how many days your menstrual cycle lasts, ovulation can occur between about the 11th and 18th day of the cycle, on average about the 12th-14th day. As the egg cell can survive about 24 hours after ovulation, and the implantation of the fertilized embryo takes place within 7-10 days of ovulation, there is hardly any reason to worry that discontinuation of lutein after the 25th day of the cycle may disturb the implantation of the embryo - then progesterone from the gestational corpus luteum will be released. The use of the drug for this particular day of the cycle has probably been adjusted by the doctor to the length of your monthly cycle. More information about the beginnings of pregnancy and preparations supporting pregnancy can be read in the following article: https://www.gdziepolek.pl/kategorie/ciaza