C25K: Week Two

I'm schedule to begin Week Two tomorrow.  I'm filled with some self-doubt.  Yesterday I did a 30-minute Elliptical workout and increased the resistance. Today my knees are bothering me a little.  I'm going to go a lot of stretching, drink a lot of water, and pray.  I'll play it by ear in the morning.  If my knees don't feel any better, I'll repeat Week One. 

I'm thinking maybe I pushed it with increasing the resistance.  I probably did because I started getting a cramp in my calves while stretching yesterday.  I'm praying it's just my body getting used to my training and not an injury.