As @Fraser says, @emily30 .... yours is an unusual story - but what a great ending! Woohoo! NO cancer diagnosed, so well done, you - I hope you had some celebrations xx
But in the meantime, you DID have all the same tests & surgery that most of us have - including the 'fright' of the possibility of a positive diagnosis and now recovering from the actual surgery as well .....
So now you've got to try & explain it all to your family & friends ... which may be tricky as you don't really understand it all, yourself xx
Were you 'given' a Breast Care Nurse? Can you chat to them about it? I think you really DO need to understand all that went on & why - I am guessing, really, that your surgeon would be the one to chat with there. You should be having followup meetings with him .... write down what you've put in your post - and ask him to explain it 'in plain English' for you.
take care & all the best for your ongoing recovery xx