Herceptin Alone and Slow down of Hair Growth

I am taking Herceptin alone post chemotherapy treatments. I finished TAC chemotherapy 7 months ago and my hair on my head, legs, arms, etc. started to grow back quickly. Now that I have had 3 Herceptin treatments (once every 3 weeks) I have noticed that the hair on my legs and arms has stopped growing - my hair on my head is still growing. Has anyone else taking Herceptin alone noticed changes in hair growth? I am not complaining but I never noticed this as a side effect.