Hi natalia88, I wouldn't be concerned about the diarrhea during the colonic, but you shouldn't be experiencing cramping and pain afterwards like that.
If your bowels are not moving regularly in between colonics, at least once daily, you may want to consider gentle cleansing enemas using an enema bag if you go beyond 48 hours without a BM.
If you would like more information on how to give yourself a safe, natural, and effective enema without undue discomfort, don't hesitate to reply.