I had the same problem and was beginning to think I would end up bald. I had my doctor check my blood work and this is what she found. I was not anemic, but my ferritin levels were low. Ferritin is what causes your body to store iron. A classic symptom of low ferritin is hair loss. Hairloss can alos by a symptom of thyroid problems as well.

I started taking an iron supplement and within a week or two the hairloss had stopped. I have continued with the iron and added biotin and amino acids l-cartinine and l-glutamine and I am feeling great!
Hope this helps!
Catherine