Waiting -additional biopsies, surgery plan and genetic testing

Hi everyone, I've posted a little bit here before and have also been lurking and taking in a lot of great information from all you wonderful women!  In May, I was diagnosed by core needle biopsy with IDC, grade 1 (it was noted by the pathologist that it is suggestive of tubular), ER+PR+Her2- and DCIS, grade 3  with comedonecrosis.  I feel fortunate as these are comparatively favorable diagnoses.  I was given a breast MRI which led to two additional biopsies (one MRI-assisted and one mammogram-assisted) - one on the same breast (left) and one on the other side (right).  The radiologist said that it appears that the DCIS is fairly extensive on the left and that she suspects that there is an invasive component (or at least that is what I took from our conversation).  (On the right, she did indicate that they were being cautious by doing the biopsy and so I am not feeling overly concerned about that - unless I remind myself that that is pretty much what they said before the original biopsies that did turn out to be IDC and DCIS!).  I meet with the breast surgeon on Monday to get the results and finally discuss a plan for surgery.  Genetic testing should come back in a few weeks (family history and my age (40)).  I'm anxious about the prospect of mastectomy but obviously I'll do what I need to do.  Mostly, I'm just worried that if there is an invasive component as the radiologist suspects, that it may not be as favorable as my suggestive-of-tubular grade 1 IDC!  Anyway, I'm not even sure I have a question for the board at this point -- Just want to introduce myself and give a shout out and well-wishes to anyone else who is waiting too!!!