I commend you in your efforts to give your self back your life. I believe that the arrise and shine company has a very good cleansing program with herbs that will encourage the release of the impacted fecal mater. I would visit their website and call them or email the before trying their system and see if they can support you in your efforts. They have a cleanse support hotline that I have called during my cleanse as well as very good comprehensive book and program. Their web site is www.ariseandshine.com - I have done a lot of different programs and I find this one to be the most comprehensive. They also have a LOT of experience with a LOT of different people and they may be able to answer your specific questions.
My support goest to you at this time. It sounds really difficult, keep trying to get your health back as you will be amazed and want to live again.