So far I have noticed the same as you! - The things you worry about the most arent as bad as you expect once it happens.
I was so sad about loosing my nipple but so far since the surgery (2 weeks ago) the thought of it hasnt bothered me at all! I still havent seen the scar properly yet as it has support tape over it but otherwise doing ok.
As for the various chemo side effects. I am aiming to be aware of the common ones and to read up on tips to help ease them. That way I am semi prepaired and its not an 'oh shit what do i do' moment but a 'I know how to manage this' moment. Best case senerio I dont get them too bad, worst case I just deal with it!
Dont get me wrong. I still have moments of crying over silly things but I am being as positive as humanly possible! At the start of this my husband said he would shave his head if I lost my hair. Now that it is looking like a strong chance of happening he is freaking out more than me! :-D