I had knee replacement in July and in Dec. Xgeva was given to me 2days before Jul surgery and monthly until Dec when I was sched, but the nurse ? it and Iwas not given it and am not sced until March, I get Xgeva dor breast cancer cell that appeared in my bones ; been 3 years. after surgery I experence the side effects of tireness, weakness, nausea. I,m doing much better but not completely. I was told it would take time to have the side effect go away. Is this true and how long?