Hi @Nervous1 sorry to hear that you are in the dreaded waiting period for results, it's very challenging indeed.
It took me a minute to work out what USS was! I found that radiographers or anyone doing scans only confirmed lumps and at most conducted a biopsy and no further information shared. MRI scanner didn't reveal anything. It's the surgeon/ oncologist and the results of biopsy that determined everything in my experience.
It's a pain that you have been waiting so long though, in my area results tend to be 2 weeks but I'm sure it's different everywhere, can you call for an update and explain you are keen, get an estimated date .....I did experience a couple of delayed or mixed up appointments on my journey too so always best to call and prompt them along.....
Best of luck and whatever you do try not to turn to Google for information while you wait as it really increases the stress when you just don't know what the outcome is. Take care