I had a very similar diagnosis twelve years ago. One large lump (I don’t remember the exact measurements) in one breast and one small one in the other one.
Initially the consultant assessed it as stage 3 and thought it likely it would have already spread to the lymph nodes because the large lump was so big. As it turned out it hadn’t, but I think it was something of a surprise to her.
I think they always use the word “treatable” rather than “curable” as a matter of practice. Curable, I suppose, sounds too much of a cast-iron guarantee and nothing in life can be guaranteed.
You are at the most frightening stage. You’ve been told it’s most probably cancer but the treatment hasn’t started. I remember not being able to sleep and being desperately worried about leaving my DCs motherless when I was at the same stage.
Once treatment begins you will feel calmer because you’ll know something is being done to get rid of it.
Treatment is tiring and takes several months, but all the cancer treatment medical practitioners I encountered were kind, helpful and so flexible about arranging appointments to suit me.
These days I rarely have reason to remember that I had cancer. Only when filling out medical forms, or passing the hospital where I was treated, or if I hear of someone else’s diagnosis. I hope it will be the same for you.
Congratulations to your DS on his results and post on here whenever you need to - there are an awful lot of us who’ve stood in your shoes.