Way to go!
At my last job, my commute was about 10 miles, and I always wanted to try biking in, but never really did. Did it part-way a couple times by parking the car part of the way there, and biking the rest of the way. (I'm sure this is laughable to many, but it was a hilly ride and I'm not a strong cyclist!) Anyway, new commute is 20 miles, which sucks in some ways (but the job, work/life balance, and other benefits make it worth the trip.)
Hope the ride home went well, and congrats on getting started on this!! Give your ass a rest and do it again soon!