Nothing to worry about but a wonderful reason to have a party! :)
I finished chemo (Taxotere, Carboplatin and Herceptin) March 3, 2010. Still taking Herceptin, Zometa and Tamoxifen. Leg, arm and underarm hair grew back enough to shave sometime in June-July. (I wasn't checking that closely as I was following the progress of the hair on my head more avidly.) B. C. (before chemo) I shaved every day if I wore a dress or sleeveless blouse. Now it is about a week between shavings and it is still sparse growth. Nothing to be worried about that I can tell, rejoice that you need not shave so often.
How is the hair on your head doing? I have heard about thinning on a few ladies taking tamoxifen, but mine is growing back very evenly all over my head. Congratulations on finishing chemo and moving forward! I'm thinking of you.