my pcos started at 13 years old
i would guess that if you have a diagnosis of pcos at 43 you must have had the tendancy to have it all along.
if you gain weight the weight gain can make your symptoms worse.
if you think back though, even if you had regular cycles and no infertility
did you have acne or unwanted facial or arm hair?
it could be also that a dr. made a mistake in your case--it would not be the first time a dr. made a mistake---most of us here have our "pcos horror stories" about our drs.
