I was on it for a long time and I don't recall any issues in that department going off it.
Have you changed your diet at all? Fluid intake?
Theoretically I guess that's possible - maybe check with your doctor. It couldn't hurt to start taking a good probiotic and eating more veggies...
Edit: Another thought - the domperidone COULD also have been masking a pre-existing but not yet noticeable food sensitivity, like to wheat or dairy or soy or something. Once you went off it, the symptoms showed up. Your symptoms sound a lot like IBS, which can sometimes be resolved by figuring out dietary triggers. If you can swing it, an elimination diet or an anti-inflammatory diet (like the Whole30) might resolve things then you can add things back in and see if anything in particular is causing it.
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