I am 36 years of age and wax my pubic area frequently for the past 5 years. Until this month, my hair has always been blond and always has returned back blond. However this month it has come back jet black which looks really strange to me seeing as I am a natural blond. Has anyone had any such similar experience and is this something I should be worried about? My boyfriend said it could be a hormone imbalance or possibly something quite serious as a friend of his died of pituitary cancer and he says had similar symptoms before things got serious and she was diagnosed? To be honest I don't really want to bother a doctor for no need, but am very interested to hear what people think is the problem and should I really be worried?