Stressed over upcoming surgery path report!!

Hi everyone! I am having a bilateral mastectomy with lymph node dissection on Feb 8th.  I had a biopsy on one enlarged lymph node when I was diagnosed.  The lymph node was 2.5 cm and completely taken over by cancer (no evidence of lymphatic tissue left, but on original tumor it was positive for lymphatic/vascular involvement).  I have lived with this now 3 months, and know that I have one node positive...doesn't seem all that bad (except that it was REALLY positive).  I keep worrying that I'm going to wake up after surgery and they're going to tell me that I actually had evidence of cancer in a bunch of nodes.  When I was first diagnosed, I had it in my head (intuition vs fear???) that I was going to come back at a stage III.  I did have a negative PET scan (thank goodness), and I am responding well to chemo (thank goodness), but I am just dreading this report.  Honestly, we can't predict the future, and I could die in 5 yrs at a stage II or survive 30 yrs at a stage III.....but I can't help but try and "number crunch" the statistics.

Has anyone else had a lymph node taken over like mine?  If so, how did your path turn out?  Just trying to figure out what my chances are. MO is thinking I'll be in remission by surgery, so he won't even tell me what he thinks my chances are of recurrence or mets later (kind of like saying that if the chemo works so well now.....no worries later).  In the same conversation though, he tells me that I should start Zometa (for osteoporosis) because I have a spine issue that may mask bone mets pain in my spine (and the Zometa supposedly decreases bone mets by 1/3).  UUUGGHHH  where is that crystal ball!!!????  I can't sleep worth a crap and I just sit up crying thinking my family is going to have to hear & process more bad news after surgery.  Maybe it's the chemo induced menopause!? Hormones are all over the place!   Thanks!