@Della - from detection to surgery, my wait was just under 3 months .... the tumour is unlikely to grow much bigger in that time - or they would have organised surgery asap ....
You've had quite a bit done in the last month since detection & all going well, you'll hear from your surgeon soon with your surgery date. If you don't hear by early next week, maybe give their office a call & just 'check up' on it's status?
Have you been given access to a Breast Cancer Nurse yet? Often you are introduced to them at your Surgeon's office at your first meeting? You could give them a call, as they would probably be able to access your file too.
Just try & keep busy & yep, try not to 'overthink it' (difficult tho it is!) Take care xx