So pleased to find some older women here, just diagnosed

 @kamada  I only wore my 'post op' bra for a couple of days - but I am not 'overly endowed' and have never been a bra lady either.  Mind you - I had my radiation 'on my tummy' (boob hanging thru a hole) as my tumour was behind the nipple - so that was interesting (and usually saved for 'well endowed' women!)  I've only ever been a 34C!  So it is totally up to you.  My surgery scar was minimal as well, so not much rubbing there either.  I had more pain from the sentinel node removal than anything (which was pulled out, not surgically removed, as I understand it!)  It was Very numb under the arm for a while & more painful than the actual surgery site!

Try not to worry about the chemo too much (assuming you will have it.)  Some don't lose all their hair (my husband's thinned badly, but he didn't lose all of it with his stomach cancer.)  They have 'cold caps' these days  as well!  They are better at delivering doses now & some people even 'work thru it' as well!!   I was lucky & avoided chemo - just having surgery & rads - but others will be able to help you on the chemo front, I reckon, as they find your post.

Yep - try not to overthink it - as you say, just take one day at a time.   Keep busy doing stuff that you love doing - and it keeps your mind active.

Take care & alll the best xx