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Period generally starts on 14th day of ovulation. Hypothyroidism
as well as PCOS, both can cause your Prolactin level to rise. High Prolactin level can suppress ovulation and thus can delay your period.
Duphaston contains dydrogesterone
and used to treat infertility
due to luteal insufficiency. Patients with PCOS might suffer with insulin resistance
and high insulin level. Treatment with Metformin
can improve their ovarian function. Clomifen can be tried to induce ovulation. If clomiphen doesn't work, Letrozole can be tried. Clomiphen resistant women may need HMG(gonadotrophis) to induce ovulation. Difficult patients may require a combination of GnRH analog and HMG to induce ovulation successfully.
You can discuss about your disease with your Gynecologist.
Hope you found my response to your query informative and helpful.
With good wishes,
Dr.Chandra Shekhar Sharma