Don't forget that every detoxification is also a retoxification. whatever toxins you are trying to get rid off, they have to pass through most of your body on their way out. If you push them all at the same time, they will re-toxify your body as you experienced.
Be gentler and more carefull. Also, no amount of detoxification works without colonics and massage. colonics as that's the place where everything stops and gets reabsorbed into the bloodstream, and massage to help the lymph flow and elimination of toxins through lymph. Lymph doesn't have it's "heart" like blood does, so only massage and excercise make it flow.