First, try not to worry about what will or wont' be. Hard to do, I know. But, it will be ok, the chemo is tough, sometimes. For some, they take it and never miss a beat, don't get sick, no nausea. It just depends on you, your treatment type and how your body handles it. I went through being treated 3 different times that I was diagnosed. Two of them were tough, one was not so bad. I had hodgkins and squamous cell carcinoma, not the same as you and not the same treatment. Someone will answer you that has had exactly what you are going through. Keep your mind positive, it will be over before you know it, and you can get on with your life.
Best of luck to you, I hope it's a smooth and easy process for you!