I'm right there with you. While I never did hit full-blown DID, t and I were talking about being co-conscious and a recent jump to more integration. I was just telling her how scary it feels (and it's super- recent for me, like earlier this week)... there was a reason all that stuffing and compartmentalizaton happened. I would second the suggestion that t could help you and your teen part navigate all that.
Mine is still a relatively new understanding, but my teenage side feels very much the same way. I don't want to keep fighting and struggling and trying to make sense of things. I'm just tired.