Woman Down!

Last night as I dove into bed (literally dove) I miscalculated the landing and slammed my right knee hard into the wooden foot-board. I iced it right away but I'm in a lot of pain. Exercise was a no-go yesterday which already meant I would have to workout 4 out of the next 5 days. I woke up this morning and the knee is in poor shape. There is no way cardio activity is advisable or possible in this condition. It's a total bummer especially since I'm coming to an end of my month of exercise. Of course I plan to continue exercising going forward but I would have liked to finish this month strong. I've never been one to do a lot of abs or arms but I think that's the only way I can get in my workouts this week. Any advice?