Hey Ilovetink -
You have so many motivations to make some lifestyle changes...everything from your health to your son. The key is to stop thinking about "diets"...you can go on and off a diet, no problem. Making small changes for LIFE is the key to successful, permanent weight loss, so your doctor's advice was great!
Have you found our 100 lb club or 300 + Club forums yet? They might be great places for you to jump in and start posting, as starting at a high weight poses its own challenges.
Wherever you post, stick around here and keep going. Can't wait to hear more from you soon!