Have you done a thorough Colon Cleanse yet? If you experience that much delay in your bowels returning to normal it sounds like you have a sluggish colon...often the result of a build-up of toxic material. A good probiotic should be used after a Colon Cleanse because they don't implant well in a toxic colon.
Also, you might want to check out this link for mercury/heavy metal detox: