Me, too, sometimes. I've taken Colonix the morning of flush (the eating day). I have gone into it sometimes fasting the day before, or just light eating, or just apples. Start with the basics and tinker on future attempts. Bottom line is a fat free day, epsoms in the evening and oil at night.
The first Hulda Clark protocol that I saw wasn't the exact one that's here. It recommended eating nothing but fruit the 2 days prior to the flush day. I did this and had no problems with my bowels during the flush.