I would first assure you that PCOS is common problem seen in your age group,don't worry.First thing i would advice to have weight reduction, if you are obese.Well if you are really overweight
with a high fasting plasma insulin
levels, you can use the metformin
, but if you are feeling nauseating you can start them with a lower dose of 500mg twice daily, which can be taken with some acid suppression drugs.Well still if you feel nauseating, then stop it and you can resort to other medicines.
Now regarding cyst in the ovary, i would like to know what is the size of the cyst and contents as seen in USG. Most small cysts are functional, and generally dissapear with time ,you need not worry.
Regarding menses, you have just completed primolut-N since 3 days . Wait for another 10 days, i think you will definitely get menses.
Then you can ask your doc to put you on some cyclic hormonal
pills best suited for your disease, but i would give stress
on weight reduction again if you are obese .
Good luck and lemme know