In the big picture of breast cancer it takes some time before it really spreads out so 11 days won't make much difference, just make you worried of course.
On your previous post I added a link about different types of breast cancer so armed with your pathology have a bit of a look at that.
As with all breast cancer...the final pathology once removed is the one they plan on. Mostly they do surgery first but sometimes they offer chemo first depending on its location to chest wall or size overall.
Use the time to look at different surgical options and if you would want reconstruction or not if you had a mastectomy. All very relevant things to think about and help you plan surgery at time of your appointment.
Reclaim your curves. ..is a good site to look at with what surgical reconstruction is available also.
https://www.reclaimyourcurves.org.au/breast-reconstruction.html