I can't seem to do a satisfactory Liver/Gallbladder Flush...

I did a gallbladder flush about 1 1/2 - 2 years ago and it was very succesful. Then after that every time I've attempted one it's been struggle. I struggle with not throwing up the oil/grapefruit mixture and getting extremely naseous and throwing it up later. Then if I do manage to keep some down, nothing happens.
I did one two days ago and I think I did it right. I fasted on grapefruits for one day, then I drank the Epsom Salts in aloe vera juice, then I drank the mixture with no difficulties, then I had to get up and go to work after 5 hours later, which was a bummer! I felt soooo naseous all day and just wanted to get home to sleep! Then I did get home and slept all the rest of the day. I didn't use the bathroom at all. I fasted all day and nothing came out. Then today I ate something and all that came out was the oil and grapefruit mixture. It was so weird -- all gelatanized or something! No gallstones, though. I don't think I drank enough.
I've attempted this cleanse many times in two or so years and I haven't been close to successful once! I might attempt a much longer fast (4 days to a week) next time. Or fast on grapefruits for a few days (as I don't drink applejuice). I just can't figure out what I'm doing wrong...
I'm pretty sure that I have a decently clogged liver. I have a sluggish appetite and I'm a little overwieght. I mainly eat healthy foods, but I do eat a LOT of oil --- mainly virgin cocnut and tons of cold-pressed olive oils. I've read that it's easier to do a liver/gallbladder cleanse when the body is free from parasites, so maybe I should go on a parasite cleanse and that might help?
Thank-you for any advise or personal experiences, I need help! Tweet