Hi there. I had triple negative, and I'm a chemistry professor at a big university in the midwest. I would describe my job as quite demanding! However, it is also quite flexible... which you may or may not have. I was also a mom of a fourth grader while doing chemo.
At any rate - my perspective on chemo plus working is that it is manageable. It depends, of course, on your chemo... and your response to it... but in general, it is manageable. During the first phase of chemo, I had weekly infusions one afternoon a week. So, I missed one-half day of work each week. Sometimes, I got really tired, and I'd close my door to take a little nap... But generally, I did pretty well during that phase of chemo (taxol plus carboplatin every third week plus a daily experimental drug (ISPY2 trial)). The second phase of chemo was much harder - the four AC treatments. During the last month, I felt hit pretty hard. The toughest was the week after my last one, and I had to teach my classes and so on. I usually walk around the classroom etc... But those classes - I was seated.... Still, I managed to make the important meetings and teach my classes during that rough week. And, it felt good to me to have been able to accomplish that.
The advice given to me by two of the head docs (head of the clinical trial and the lead oncological surgeon) was that I should do my best to treat it like it was an inconvenience. I took that to heart.
Another piece of advice I'd like to share is that MOVEMENT is super important. All of the docs and PAs and nurses were adamant that couch potatoes suffer much more than active people. I'm a huge bike rider... and I stayed that way through chemo. I commute to work every day by bike... run errands... pick up the child... and I ride for fun also. I did as much of that as possible, and I rode my bike every single day of chemo (except for the one three day business trip). Some days, I didn't ride far... but to be honest, the pretty darn good days far outnumbered the cruddy days.
I hope this helps you.
As for surgery.
I elected for bilateral mastectomy. I wanted symmetry and wanted to avoid radiation. I had never loved having rather ample breasts, especially as an athlete, and so I am perfectly happy being flat. I opted against reconstruction because it was such a huge todo... multiple surgeries... Also, I had bumpy boobies, and I didn't want to end up constantly freaking out over every new bump....
I hope your chemo is effective with minimal side effects!
PS - sorry you're here... Sucks, doesn't it?