It's a cliche, but we say it often because it's true. A journey of 90 pounds begins with the first step. ;-) Congratulations on taking your first step!
Welcome to Spark from another newbie. I've been using Sparkpeople for almost 3 months, since my Dr. told me I'm pre-diabetic and I got really serious about tracking what I'm eating so I can get control of this before it gets to the point that I'll need medication.
You can do this. Look at all you've been through to get to this place! It can only get better from here.