I am so Sorry to see you here, @Mic80 - but we'll help you get thru these early days, as we've been there ourselves & know how it feels. It does your brain in a bit too .... try not to google too much info - everyone's case is different & you could be reading the wrong stuff.
Try not to pre-empt the scans/tests ..... it is what it is - and your medical team will explain it all to you & help you deal with it. Do you have a close friend or relative to attend the meetings with you, for support and an extra set of ears? It takes the pressure off you a bit - and they can drive you to & from appointments too. My sister in law has come to all my important meetings, including my 1 year review last week with the surgeon - and I recorded a lot of them on my phone too. My surgery was in Jan 18.
Take lots of deep breaths .... you can do this. Try & take one day at a time. Feel free to scream & shout & react in any way that you feel - all that is totally normal too. You'll have your ups & downs - but it will get better, once the surgery is over.
I hope you have family & friends around to help support you - just the waiting between appointments & for results is one of the worst bits. They won't really know about the node involvement until after the surgery & the pathology is done (another wait!)
If any of your friends offer 'help' - maybe suggest a frozen meal or two, to help get you thru after your surgery, as you won't feel much like cooking to start off with and also may not be up to driving for a wee while either, for getting in supplies?
Have you been assigned a breast care nurse yet? They are a great support & fountain of knowledge. They can help organise your appointments & followups .... and a sympathetic hear as well.
Throw up any question that you have here - we'll do our best to answer it for you.
Take care, thinking of you xx