Hi! @nonkyboy - goodness isn't it good that they have recognised all these aspects and checking everything prior to putting you under strain with anaesthetics
I agree with Zoffiel - if you don't have one, sus out a Breast care nurse - she will be your go to!
As to chemo or any other treatment options that is, as your surgeon said, post surgery, after they have all the pathology results. There are counsellors out there that can help, BCNA or Cancer Council or perhaps your own local hospital.
Here's hoping your cardiologist visit will be a positive one that will allow the next phase to begin.
Take care and willing you along to a good outcome x