Let the 5K training begin

My husband and a good long distance friend of mine are going to start training for the 5K with me on October 17th. 
We'll be following the Couch to 5K program and I'm nervous but actually REALLY excited about it.  I've been hearing personal accounts from friends and family of people they know first hand having huge success with it and losing weight.  
I'm hoping and praying that this is the start of being medication free with my diabetes and only having to control it by diet and exercise.  Only time will tell though, and I only want to take one step at a time.