I Have Been On Drugs For Metastatic Breast Cancer In

I have been on drugs for metastatic breast cancer in my sacrum for two years, so far no spread. Lumpectomy and radiation in 19999, no lymph node involvement .The steroid I was on caused hideous side effects, including steroid blister, which were extremely painful.not sure about the hormone blocker. Finally got weaned off the steroid over 12 months ago, still on the blocker but my energy level is bad. Even a short walk is a challenge. I can go at my pre cancer diagnosis pace for a few minutes then get a painful hip and heavy legs.Very depressing. How can I get better when exercise is such a challenge? Angie