I so want to help. I was just reading (Googling) on the Net about boosting my red blood count with supplements.
I came across this information and thought of you, Mishka -- B-12 (which I take 1500 sublingually each day) + FOLIC ACID (which I used to take and some how fell off my list, and I am reading it INVOLVED IN THE PRODUCTION MYELIN SHEATHS THAT PROTECT NERVES AND RED BLOOD CELL PRODUCTION are a combination used for both issues.
Also, ALPHA LIPOIC ACID (which I 300 AM and PM) is involved in nerve regulation, neurtalizes free radicals and can cross the blood brain barrier.
You may want to look into LYCOCAPS (Google).
I am now taking LYCOPOM, but the above sounds very worth your while.
Your nerves need to regenerate. I too had nerve damage from the severing of nerves in my armpit and upper arm (removing lymph nodes, cutting muscles, and so on). I had neuropathy. I did find getting the oxygen flowing to that area, and propping it helped. But my doc was explicit about choosing a trainer who is familiar specifically w/breast cancer patients recuperating and their specific problems. You can do more damage than good if you do not have the right rehab person, with training in unique area. I wish I could offer my exact directions in finding such a specialist, but my fantastic plastic man (who did my tram flap recon) had tapes in his office, along w/cards for just such a person. Perhaps that is a route you could follow in France, with a potential reconstruction expert who is in to follow up care to the nth degree.
Keep us up to date on your progress, and I have no doubt you will get a good handle on this as you appear to be intelligent, forceful, insightful and motivated by your suffering. None of us should be in such pain. It is not a necessary part of accepting your lot. You can find help. Keep on track. And consider the supplement route. I have an onc in NY who specializes in supplements, meditation, guided imagery, healing the whole person. His integrative oncological approach has helped keep me STABLE I have no doubt. He is a rare find, but surely there are others. The above supplements have a means of rectifying your problem substantially. That is what I pray for you... You deserve to feel joyful, harmonious and without pain. Stay on top of this till you find resolution. With loving energy sent your way,
ANDI 
Mishka your pain is getting to me
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