Women only please!! Are any of you losing your hair?

I haven't had a baby in 3 years so the after childbirth hairloss is not the cause. I have been tested for anemia and my thyroid is fine. I have beautiful lush hair but it is falling of by the hundreds of strands especially after I shower. Anyone in the same situation?
lorelo and Bev...yes I have dyed my hair professionally twice. Before that I used to do it on my own and never experienced hairloss until I did it professionally. I thought the professional stuff was supposed to be better. Also, yes I am under quite a bit of stress at work, but nothing unusual.
Marivic, that's interesting, I might just try that.