Hello, Rob.

Welcome to the boards!
Not that we can diagnose you here anyway, but we really need some more information.

For instance... when you feel full do you feel guilty over it? Do you regret having eaten that amount, or feel as though you NEED to purge in order to get it out of you... or is this simply something that’s completely out of your control and you don’t WANT yourself to purge, but it’s happening anyway?
Also, do you feel comfortable with your current weight? And your appearance? Or do you sometimes wish you could lose weight because *somehow* that’s might make you a ‘better’ person?
Have a think about these things first and then let us know, okay?
The way you described it makes it sound as though it’s something comletely out of your control as though there may be some other problems behing your purging. I would suggest you make an appointment with your doctor and get some tests done if this is the case.
Good luck with everything! Hope to hear back from you soon.
Ashlee