yeah keep riding! I was afraid of the same thing and have had similar results measuring (or attempting to) my sitbones. I have the B17 imperial and after 60 miles of riding, I now realize that my sit bones weren't used to riding so much yet this season (fellow madisonian who likes to ride in good weather ).

my recent ride didn't cause any pain! Not bad at all seeing that I've ridding fewer than 100mi this season.