Very sick mid flush program

I've been doing the Liver Flush with much success. I've done it thirteen times and have passed countless gall stones. My skin is clearer and food allergies have diminished tremendously.
So whats the problem? About two weeks ago I started getting very ill after eating- nausea, dizziness, fatigue,bloating and indigestion. It now occurs after every meal, no matter what I eat. I have since seen a nutritionalist who says I have IBS and recomended that I stop flushing as the epson salts may be putting a strain on my small intestines. All my blood tests come up negative for anything serious as well.
Its been about a month since my last flush, but Im starting to think that I should do another one. Its possible stones have moved to the gall bladder and need to be passed again.
Anyone have a similar experience while doing the flush?