@Jenny004s That is wonderful news about the no spread. This whole wretched thing is frightening but as your treatment plan forms and gets underway, it all gets more manageable, and mostly less scary!
I had a double mastectomy (and reconstruction) two weeks ago tomorrow. With no lymph node spread it sounds as if you won't be having an axillary clearance. That will make recovery easier and you'll be less likely to have complications like lymphedema.
Whether chemo is required or not is best discussed between you and your doctors. You said your cancer is very aggressive, so that sounds like it's Grade 3, meaning those little buggers are very busy multiplying in there. It will all become clearer once the pathology from your mastectomy comes back.
I had no lymph node spread. I have a bad family history and so did an oncotype test to see if chemo would have a curative value should any cells have wandered off to find somewhere else to roost. It came back with a clear yes so I did chemo.
Chemo is not pleasant by any stretch of the imagination, but for most people it's manageable. Try not to anticipate any side effects, we are all different and react differently to the same drugs.
Ask lots of questions, listen to your gut, work with your doctors. Do you like them? I really like my breast surgeon, he's very intuitive and sussed me out pretty well, and so I trust him and the advice he gives me.
Hang in there Jenny! You've got this, and we've got you. Big hug, K xoc