I know what you mean, I am near the end of Chemo, but teary at times for no reason other than this cancer thing comes back to bite you every now and again! I hate the feel of chemo,and the loss of hair, I still feel very obvious in the shops, however I know people are busy doing their own thing and its just the looks they give you, like "poor thing" then they move on, however we do feel it and we are fragile,I think it just mounts up!
This support online is helpful as we are not alone in our feelings, helps! We will get through!!!