I'm glad you're doing well honey. I think you're right about exercise. Just the feeling of well being that a good workout gives you is invaluable. I'm sure exercise will help with potential side effects of tamoxifen too. Don't worry about having mini melt downs. This whole emotionally roller coaster will be with you for a while yet. I was telling my sister how happy I was that 2013 was over and promptly started to cry. Go figure! Anxiety about new treatments and new experiences with this journey are bound to effect you so just breath. You're over a big hurdle with chemo finished and I think just getting over that can be emotional too.
Good luck with wringing out those boobs LOL
Lots of love
Janey xxx