Welcome to the site. I'm so sorry you have had to come look for us, but you have found a great site. We have ALL been in your shoes.
My history - Almost 6 years ago: Estrogen positive tumor 2.5 cm. Was able to have a lumpectomy. 4 nodes positive. At that time, surgeons removed most all of the nodes. I had 8 rounds of chemo and 30 days of radiation.
I don't want you to think this is a day in the park, but in all honesty, it's not in any way a death sentence. My cancer was Stage IIIa. Most people who are diagnosed with BC pass away many, many years later of something completely unrelated.
First, take a deep breath. Contact your local cancer society. They may be able to hook you up with a cancer 'coach'. Someone you can talk to regularly, and maybe even go to doctor appointments, if you need them to. My insurance company provided me with a nurse who I could call during working hours any time, and she would check on me a couple of times a week.
Please come back and let us know what your findings are You should get copies of everything, so you have complete knowledge of what type of BC you have.
You will calm down over the next few weeks when you have a plan in place. Keep in mind that if you don't have a good gut feeling about any doctor/surgeon you are seeing, you are entitled to a second opinion.
HUGS, and many prayers for peace about this process.