(((KittenLover)))
I agree that your GI problems are likely causes by stress and anxiety. My body does the same thing - it happens because I numb my emotions and my body 'lets it out' in that way.
The breaking down at home is likely a delayed response to what you are feeling, perhaps numbing, while you are with your T. It's actually not a bad thing, though I'm sure it feels horrible. It's a release. Better to let it out with crying etc. than to stuff it into your body.
I know it's hard to feel like you have no control over your own therapy. It's such a personal thing and the threat of parental involvement must feel really invalidating. I know it would for me. Maybe you could try bringing that up with your T?

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