I am so sorry. I have been losing hair steadily, too. It is by far one of the cruelest symptoms of PCOS and it is so heartbreaking.
Have you ever gone to a dermatologist to rule out other possible causes (such as skin conditions and such?) That might be an idea to consider.
Through other cysters with hairloss on this board I had heard of a shampoo and conditioner/scalp treatment called Nioxin. My hairdresser recommended it 2 weeks ago and I have been using it. It is hard to tell, but so far, there seems to be less hairs falling out. I will keep you posted. I hope and pray that it works and that maybe it could help you, too.
I have tried taking Brewer's yeast tablets and also the "Nourish Hair" vitamins from GNC, but they didn't seem to help.
I don't want to go the Rogaine routine because it is expensive and if you stop using it, the hair falls out again, so I have been told.
I will be checking this thread, too to see what other cysters have to say.
Please know that I am very concerned about this, too and wish we didn't have to deal with this terrible symptom!

Kathryn