Delray, I haven't experienced chemotherapy either but I can say that after radiotherapy and ADT I was very definitely fatigued. In particular I found that in the evening it felt almost as if I was walking into a brick wall, there was a point when my brain seemed to give up and couldn't concentrate enough to engage with my family, or reading matter, or the television. I just had to go to bed early.
Things did improve over the next few months, though even three years later I need more sleep than I used to. Like you I was a bit more aware of niggles, but since I knew my body was suffering from the effects of the radiotherapy I took to taking ibuprofen which helped with those as well.
I did try to keep fit and sane as much as I could, the morning was much the best time for a good walk.
Good luck, you are not alone.