Hair loss products

I have been trying Rogaine (minoxidil) for two months now.  I am not sure if it's helping or not.  I desperately hope that it will.  I've read that it can take 3 or 4 months to have an effect so I'm going to keep trying.  I asked the oncologist whether there was any possibility of medical treatments for the hair loss but he had nothing for me.  Seeing that he told me my hair would grow back when he gave me the chemo I thought he'd have some sort of suggestions but no help from that department.  I've found the cheapest way to buy the Rogain or Minoxidil is through ebay.  I just want enough hair to have a normal hair style and able to feel smart and professional and not like I'm a senior citizen before my time.  If it works I will report back.