Just read your post and you sound in " shock " with the whole thing, which is understandable. Waiting the extra 10 months ( you did not know at the time ) is scary too, and I can understand your concerns re nodes in central chest area... I was stage two.. tumour was a few centimetres and one node involved in axillary clearance. Oest _ Prog _ I forget HER status.. but I did not have Herceptin, nor tamoxifen. I did have chemo and radiation.
I hope the second opinion gives you some peace. It is hard to " trust " someone with your life. I had radiation to half the axilla and chest. I ended up having another tumour primary in the other breast a few years later, so had more radiation to other side of chest and axilla. The margins were close to the chest wall and the oncologist said radiation would help with the chest wall area involved.
It is good you have a chemo plan now. Regimes have changed since I had my chemo in 1998. I did not like it, but thought it would give me the best chance of survival if I did.. so I did.I think it was 3 months chemo, then radiation; then 3 more months chemo, from memory. It took me a few years to get back on track.. and to put the BC thing to one side, although I still do think about it every day, if only for a short while.
Knock those cancer cells hard, to give you the best chance, then cross your fingers.
P.S. I was 42, now 57..... It IS a long haul and you may wonder " how will I get through all this ? " but you will. Just take it slowly.. day by day..time passes.. Afterwards, give yourself 12 months to get going again. You may not be the same as you were in many ways, physically and emotionally as you journey through BC. Go with all the emotions.. anger, sadness, joy, fear, regret, accept. Lean on people when you need to and keep searching for knowledge of what is best for you.
All the best, Kathy. ox.