pcos supplements and ovulation

ive had pcos since i was 16 im currently seeing a fertility doctor who at the moment is not much help i do not ovulate and SO has low sperm count he is currently taking zinc and selenium to help count and i am taking zinc selenium, folic acid and vitamin c but i have heard about inositol helping with ovulation holland and barrett have choline inositol is this the same kind of thing and has anyone had any success with it or would you recommend any other vitamin that may help ovulation i have already tried vitex and it did nothing thankyou all