A young girl 18 yrs old , having normal body wt. & normal sec.sexual characteristics came to the clinic for not starting menses till yet. On USG there were multiple follicles in both ovaries. Cyproterone acetate prep. given her for almost 1 yr.

After stopping medicines she again developed amenorrhoea.Her FSH & LH levels are less than normal. Vitamin D was deficient for which she was given tt .Her TSH levels are normal. How to proceed? Give valuable opinions.