I too had a small hair problem before going on BCP's in my twenties. They won't give you any lasting benefit and I don't remember them helping my hair problem either. People say they make it worse and mine did worsen after going off them, but maybe it would have anyway - I don't know. I do know that hormone pills are not a good long term solution for facial hair.
I've just posted an message on NAC and maybe that may be helpful to you.