Yikes! Sorry you had a fall. But that does happen. When I first returned to cycling, I had several inglorious moments -- once running into a large, highly visible concrete bench while I was going very slowly. I'm impressed that you are eager to continue cycling despite a brief setback. As someone said upthread, you've got spunk and that will take you a long way.

Yyou are wise to rest for a day or two and be careful of your knees. I hope you get a chance to try the Day 6 as soon as you are feeling better. Let us know how it goes.