25 days is a LONG time to fast!
Are you checking in with your doctor?
From what I gather the most of the junk is detoxed out within 10 days. Longer than that it enters the spiritual level of fasting. The mucus could just be from irritation in the gut. Are you taking herbs or anything? Are you feverish?
You may want to start to wean in eating food again. You should take half the time at least that you were on the fast weaning stuff back. Why not have some pulp in your juice and veggie broth and see if that helps blast that stuff through you.