Kristen, Couch to 5K is a fantastic program!!!
And Katie, congrats on being almost 20% done with your goal

How neat! Do you have a reward system set up along the way? Sometimes that can help
I actually have to refrain from doing anything too physical, because I've been told that losing weight could hinder our pregnancy efforts. My BMI was underweight when we got pregnant with Drew, and now it's finally in the healthy level, although at the lower end of the healthy level... So I walk, like was mentioned before, as a means of maintaining my weight and still getting exercise in. It feels so weird not to work out, I used to run half and full marathons, so seeing other runners out there in the beautiful San Diego sunshine makes me jealous.