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.
Detecting Ovulation by Progesterone Level. Traditionally (often a euphemism for We've always done it though we don't have the evidence) serum progesterone has been used in the UK to assess the likelihood of ovulation having occurred on day 21 of a day 28 day cycle (or 7 days before next period if cycle >28 days).