mrs lang

I am a black 36yo female experiencing thinning hair and what appears to be female pattern baldness. At the crown of my head it is very thin, very noticable. Also the temple areas are pretty much gone. I do see a dermatoogist. He had me take Biotin 1000mb bid and he also gave me injections in my scalp. So far I have not seen any results. I am very self-conscious and I'm just not sure what to do.
I have even had 3 consultations with "hair club" facilities which all have been saying, "it's not bad enough yet." Which I don't want it to get to that point. Do you have any suggestions that might help? I am on a prenatal vitamin, but not pregnant yet.
thank you.
Sincerely,
Mrs. Lang