Wondering if this will ever be over

Hi again ladies.  Thought I'd let you know that the tingling in the fingers has resolved itself.  They seem to think it was caused by the Taxol even though I had my last dose 30th November.  Only have 7 more radiation treatments to go and it is going very well.  I am pretty red and tender but have been walking 4kms per day and swimming 1km 3 times per week so trying to stay as fit as I can.  I do get tired but doesn't everyone after a few glasses of red.  LOL.  I can now see light at the end of this and can't wait to be finished with the radiation.  My next question to you all is - does anyone have experience with Letrozole (Femara).  That is what I go onto next.  I have already started taking Vitamin D even though they said my levels were good but the bone density showed that my bones are thinning before I even start this drug.  That worries me as well as the talk of aching joints.  Any thoughts or info would be appreciated.