very dissapointed liver cleanse, what happened??

hi i completed a liver cleanse several years ago with great results (it was the Hulda Clark cleanse)
I decided to do another one this weekend , i stopped eating yesterday at 2pm and followed the instructions. as i have cleansed before i kind of new what to expect.

Something has not worked and i was wondering i anyone will know why or if they have experienced it themselves.... well i took the 6.00 and 8.00 dose then i took the olive oil and grapefruit at 10.00 and went to bed.

I woke up at 11 and was having a cold sweat i felt very sick, went to the bathroom and was sick once, not alot came up just part of the oil.
I went back to bed hoping to have some bowel movement but had nothing.

I woke up at 7.30 took some more Epsom Salts then again at 9.30 (the last dose) and still no bowel movements just had a terrible headache.
I have sat on the toilet but nothing!in fact i am quite constipated!!! what do i do now?? do i repeat the cleanse in a few days?? did i do something wrong?

advice would be great thanks
jodie