Vallerina, what a shock for you! Your story is startlingly similar to mine but I am a few months down the track. After a routine screening mammogram, I was called back for an ultrasound due to dense tissue. I had core biopsies and was diagnosed with invasive ductal carcinoma 3.5cm, but then had an MRI which showed 9cm, so pretty much the same as you. I was so shocked and scared as no one else seemed to have an area that big! I also had no lump. I am telling you this because I want you to know I have had an excellent response to chemotherapy and my tumour can hardly be detected on my latest MRI. I am having a mastectomy next week, but that was my personal choice. I wish you all the best with your treatment. You have so much to look forward to with your wedding and a new grandchild! How wonderful! You will always have support here, whether you want to ask questions or just vent, we understand.