Hi Susan
Looking at your posts with interest - yes definitely the steroids will have caused you to gain weight. I look at my Christmas 2013 pictures and I can see the round face caused by the steriods. Like you, I didn't not have the energy to exercise during chemo (despite my oncologist wanting me to do some exercise). I'm on tamoxifen and have struggled to lose any weight since completing chemo. My onc always says that hormone effects are probably influencing my ability to lose weight rather than the tamoxifen, but everyone on tamoxifen talks about gaining weight and difficulty losing weight.
My hair also came back grey and has stayed grey, but fortunately that's enabled me to try a variety of hair colours.
All the best
Stephanie