Use the time when you are out of town for business to give the knee a total rest and let things settle down. I went through this last week and the time off did my knee a world of good. I am using the 2 weeks following (just ending week 1) to spin lightly while riding an easy route. I'm keeping the knees warm while riding, also. When it started I stopped riding and got a doctor's appointment to have things checked before riding, when the pain and swelling stopped. I did use the time off to go over my bicycle fit and where everything in the cockpit was set, little adjustments or reassembly after maintenance changed a few things that I hadn't realized were slightly different. I guess the little things caught up with me, I had no warning about the sudden pain and swelling at all.

Bill