Letrozole(Femara) +Zoledronic Acid (Zometa)

I am to start 5yrs of Letrozole(daily pill) and Zoledronic Acid (6 monthly intravenous) in a few  weeks. The side effect sheets make for crappy reading as usual and am keen to hear anyone's experience that are taking this combo. I know we all react differently to these drugs and also know there is quite a rate of drop-out altogether on the hormone therapy. Stage 1...grade 3  ER positive with no lymph node involvement. I have had lumpectomy, 2d surgery to get a bit more....chemo and just finished radiation. Now the new stress of how I will cope with these drugs and how well or unwell I will be for the next 5 years is freaking me out a bit. 5 yrs of possibly being unwell and feeling crap for a chance that cancer may or may not recur. Its another shit hard decision to make. Be grateful for anybody's experiences and input.