You'd have to get your hormone levels tested. Usually with pcos it's not a lack of estrogen it's more that you have that PLUS the increased androgens. You could speak to an endocrinologist about an androgen inhibitor, but a responsible one won't even entertain the idea until you have confirmed you won't have (any more) children and have pity much taken permanent steps to prevent it. If you happened to all pregnant while taking the drugs, it would be deadly for a male foetus. And even then it's only dealing with one aspect/side efftct of the pcos. (Can you tell I made enquiries while ttc?).

Estrogen creams tend to be aimed more at menopausal women who are no longer producing estrogen at the right levels....