Mark, welcome from another southern californian. You and I had somewhat similar diagnoses although I did have lymph node involvement and underwent surgery prior to radiation. You've gotten some great advice so far from some of the most knowledgeable people on the forum. It's amazing to me that you're able even to get on a bike so soon after RT!
The anxious thoughts come with the territory. Charm's judo metaphor is great and the first time I'd thought of it that way.
You and I and so many others who are
HPV+ are among the lucky ones, and a day doesn't go by when I'm not appreciative of that. As David says, the chances that this disease is behind you are very good. Please keep us informed of your progress, and best of luck. (oh and it would be helpful if you made a signature for yourself as you see from the rest of us. Go to the 'My Stuff' tab at the top of the page)