Wow! I am fascinated by your 'black globs'! Were they in the form of stones or were they rubbery? liquidy? Verrrrry curious.
It is said that fresh bile is chartreusy/green and the darker it is the more stagnant it is. Maybe what you got out was very stagnant dark dark green/black bile??
I'm soooo glad you're feeling better! You can flush every two weeks and watch the improvements happen...