I am just like you! - except at least you had a REASON! One thing goes away just to be replaced by something else, it's constant! When younger I'd comfort myself with "I'm too young" now I can't say that anymore and I get so depressed. (by the way I'm 46) I've "had" stomach cancer; bowel cancer; uterine cancer; ovarian cancer; brain tumors; skin cancer; throat cancer... I probably missed a few!
Sometimes one overlaps the other, sometimes I can be ME for a few weeks until I get some other symptom. When whatever it is goes away, I look back on it and think how stupid I was and laugh, then when the next thing hits I think, "Now THIS time it's the real thing!! I can't keep dodging bullets forever! This is it!!" And the cycle starts again.