I am doing a slightly different cleanse than you are, however I do have some experience with cleansing and fasting and suggest the following:
It is not clear to me weather or not you are:
1.not having any bowel movements or
2. not releasing the salt water.
In either case, I would not do the salt water and instead get an enema bag at a local drug store, fill it with body temp water (be exact...maybe 1 degree warmer) and slowly take the water in to your colon. Do not use tap water or well water, use distilled water, take it in slowly a little at a time and then release it when you feel the need in the toilet. As you get used to it, you will eventually be able to hold more water in the colon, massage your colon and then release. I am a relatively healthy person and doing this on my own during a cleanse, I was able to release some real old impacted stuff.
Congratulations on cleansing - it is a bold step to do, and if you want to see the program I am now doing (along with the lemon maple drink) visit www.ariseandshine.com . They offer a very complete and comprehensive program as well as phone support. I have tried a lot and so far I like this the best.