There was this discussion here several years ago about ongoing hair loss/thinning r/t Taxotere. Do you know what chemos you had?
I also found this abstract posted by Becky last year (docetaxel = Taxotere).
Some women report their hair is a bit thinner when taking AIs (I'm assuming these are women who didn't receive chemo), but I don't think anything as drastic as what you're describing.