Up till last week, my right ankle didn’t get worse after taking the advice to ice it after activity. However, last wednesday I had a ride cut short by rain. Only got to ride for 2km. So, on thursday, I decided to go for another ride. Lo and behold, it rained just as I was starting.
Not wanting to give up, I waited till night to ride, and did 12km more time than usual practicing freemounting, because it was tricker with handlebars. The next day, my foot ached. I suspect that cycling itself it not much of a problem, but rather all the jumping and hard landings of a beginner unicyclist.
The ache lasted a few days, and is nearly gone today. I have exams till next week, and so will take a week off riding. After that, I may test my hypothesis by minimizing jumping, or sticking to riding 2 wheels (it has been a while since I did that!)