Paul,
Hang in there. I read your post about being in "the tunnel" from 3/18 and it brought back my husband being in that same place during is treatment. It sucked, that is about all I can say. However, he actually started feeling better the last week of treatment and progressively got better over the next two months. I hope this is true in your case!
One question, when you started having pain in August, was there also a spot or sore of any kind or just the pain?