My thoughts are with you. My step son had a sarcoma show up on his right hand, they had to do some major surgery and grafting to get rid of it (including a nerve reloacation - now when you touch his thumb he feels it in his wrist, crazy). Watching him go through it has been tough, but the main thing I've learned is your body can can help heal you if you let it. Diet, exercise, REDUCE STRESS, these all help in conjunction with whatever treatment is needed.
The other thing that pisses me off is when we go to the Cancer Agency for appointments, and I see all these people sitting outside, some of them with IV in their arms- smoking away!!! Why bother with the treatments...
Anyway, you'll get through this, stay positive, live well and don't let it become a dark cloud. You are stronger than it is.