Congrats on day 2! You're beating my initial times when I started my 12 mi commute last year. It will get easier and more comfortable as you spend more days in the saddle. I would definitely keep track of your stats (speed, distance, weight, etc.) it will be a great source of inspiration down the road. Even now I occasionally look back at last year's stats just to cheer me up when I lack motivation. So keep up the good work and let us know about your progress.