It's enough to just focus on chemo first. Each step is something different and when thought of all together it seems insurmountable but broken in to steps and when going is tough, down to getting through each day you will get there in the end. Tamoxifen is just fine for some with very little side effects which go away after a few month and some like me who is drug sensitive it plays havoc but I stay on it and as time marches on I am getting through it. The most obvious side effect is hot sweats which even if you are in menopause seem to intensify them through Tamoxifen. You can take supplements like magnesium and D3 vitamins for bone aches which help. Hugz <3