Welcome to the site, and there is lots of information available that you should find helpful.

My diagnosis was very similar to your husband's, as was my treatment, except it seems he did not have neck dissection as I did.

What I have found is that you can't spend time worrying about side effects or long term sequelae that may or may not occur. I had a fairly easy time through treatment, relatively speaking, in that I did not require a PEG tube, and did not have severe radiation burns. I have the current battles of dry mouth, shoulder and neck stiffness, etc. that are part of the whole package, but I play golf, travel a great deal, work every day and do pretty much what I did before treatment. My sense of taste is not as good, and my shoulder issues make certain tasks a little more difficult, but I do them. An extra Advil every now and then is a relatively small price to pay.

My wife and I travel extensively, and we went on our first trip just a few weeks after treatment ended. I've been on a few since, and enjoy them just as much as before.

What will tomorrow bring? Who knows? I just try to keep a smile on my face, deal with today, and face tomorrow when it gets here. ;-)