Hi @Angelo ,
I also have stage 4 , i'm on tamoxifen and Xgeva and prednisone , while my white cells are ok, my thyroid is borderline due to the treatment so monitoring that , only finished active treatment February 2019.
I have gone through the vulnerable , s..t this is not going away stage , just hang in there , my husband , my boys and dog and cat have been my rock , so lean on your support group , it does pass and you'll be fighting back soon.
I'm negotiating with work about going back part time ( due to fatigue and crappy lungs) , exercise every day and socialise ( with people I know I won't tell off )
We don't know how long we have , so we have to make it count.
It's ok to feel this way.
Take care