JMHO --and I've been going to OA for some time-- so I understand your concern about being unable to express your feelings in a group setting.

That said, I sat in meetings for awhile and after months of listening and identifying so deeply with other people's stories/recoveries, I finally felt safe enough to share in the meetings. There are many, many people in the program who have very "complicated" situations. Not to sound rude or anything (and I hope I don't) but you are not alone. That's why we're compulsive overeaters. It's a disease. And we don't like to talk about it! But we have to do that to recover!! I take it very seriously. OA saved my life and you can be sure that if I wanna continue to save it, I'm gonna share that stuff and get it out so that it doesn't eat me up inside. The identification I get with other overeaters in the rooms of OA is what makes it easier for me to overcome the reasons/triggers for my overeating in the first place.

Also, I saw a therapist for quite some time about my "issues"-- and this seemed to work nicely with the program. Maybe starting out slowly and talking to someone on a one-on-one basis might be a good way to begin?

This was just my experience and I wanted to mention it, for whatever it's worth...