I am sorry to read of your diagnosis, @Annika37 - where abouts are you (Town and/or state)? We may have members who have more info on resources available to you in that state.
That breast surgeon needs an urgent course in humanity (and a good slap across the face!) There are ways of delivering news that isn't good - and that wasn't one of them.
Also, check out the Otis Foundation - you should be able to book in a family holiday with kind hearted folk who allow their holiday homes to be used by those with Breast Cancer.
https://www.otisfoundation.org.au/directoryAll the best with your ongoing treatment - and wishing you and your family well xx