On the subtopic of being too afraid to try any flushes try first to start reading a little about them. It's good that you even think about them. I would recommend to gradually read the messages on Colon Cleanse starting with the first one in the archives. As you slowly accumulate this information along with getting the answers to the questions you are now asking, you will see how they are both pieces of a puzzle that fit together.
As you see how a cleanse works (i.e. in the bowel) your understanding of the whole picture will lessen your fear. Knowledge of this (bowel cleanse) is very valuable because what happens is that facts will lessen your fear. Usually the more unfounded in fact, the greater the fear.
Most people operate this way. To get your questions answered first is wise, rather than forgetting about them to do a Bowel Cleanse (or flush)that you feel skeptical about at this time.