If you tested positive for Lynch syndrome, but do not have a cancer diagnosis, or your doctor suspects that you have Lynch syndrome, the following cancer screening plan may be recommended.
It may delay ovulation but when you stop taking the progesterone, you would bleed and your ovulation would resume. Sometimes taking progesterone cyclically on cycle days 15-24 can help with symptoms that occur in the second half of the cycle.
Once an embryo implants in the endometrium and pregnancy occurs, progestins help maintain the pregnancy. At high doses, progestins can prevent ovulation (release of the egg from the ovary) and thereby prevent pregnancy. Progestins were first isolated in 1933, and progesterone itself was synthesized in the 1940s.