Hi Nicole and welcome to the group!
You should be proud that you are helping yourself, yes you are young but you want to be able to live and have children; be happy.
I've been in this process for a little over a year now, and was a binge eater too. Without even thinking it has taken over my life and after my grandma died in 2011 I didn't want my life to end up like hers and die so young because of health problems due to obesity. Last year I was diagnosed with endometriosis and had to have surgery which pushed this surgery back. I'm doing my pre op diet right now and have surgery a week from now
There's a ton of info on here, and lots of supportive people. You'll do great and good luck!