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For your information, human reproduction is not very efficient. Chances of conception during each cycle is about 10%, and 85 % of fertile couples can successfully concieve within 1 year of trying to concieve.
From the follicular study, it seems that clomiphene therapy has been effective in inducing ovulation. Your ovulation occurs in between day 14 and day 16 of your cycle. Hence having sexual intercourse from day 13 to day 16 of your cycle, regularly should help you conceive.
In your case, continuing the treatment for polycystic ovaries with metformin, losing weight should help proper ovulatory cycles with healthy follicular development. Use of medications like clomiphene, to improve ovulation can speed up the process. In women with PCOD, ovulation can be induced in 80% of women using Clomiphene and pregnancy rates approach 20-25% per month, provided that there are no other factors affecting fertility.
You will need to have patience during this process, and try to enjoy in the meantime. Failure to conceive should not result in stress, depression or dejection, as that can add a toll on your relationship. You might continue to work with your doctors for further advice and treatment.