Hi marmee. I had Farrah Fawcett cancer when I was about a decade or so older than you. Same staging. That is what I've started to call it because people don't actually comprehend what anal cancer could possibly be. Such a delicate area, yes?
I can't imagine how you can continue a workload. Blessings. My ordeal was also over a decade ago and I think the tortures (lol, why persist in glossing over the obvious?) were different.
I had 16 weeks of radiation (which no one ought to endure and against which I rebelled in the midst of it all, too late to not be a crispy critter) and a 3 day bout with chemo at the beginning and at the end.
It is sorta funny looking back in that they underdosed me for the first round of chemotherapy and I thought "What is the big deal folks are complaining about?" but they made sure to give me enough the second time and I discovered that upchuck can spew from one end to the other of a twelve foot long room when you are in a prone position, moaning on a couch.
I did not lose me hair but it is thinner which, in truth, isn't so awful because I have/had a real mop. They did not offer steroid foam to me (back just over a decade ago) ... is it helpful?
Consider yourself lucky that you can count down the days. To the end, I was counting hours and minutes from pain pill to pain pill.
BTW, I've no ever been troubled again but cancer and hopefully will not ever again be visited by such a monster.
Hugz and best ever wishes for renewed good health.