Don't worry I threw up too, but around 2am! So you're more likely to have a more successful flush than me! I didn't have any BM's in the morning! That's when I realised that I had neglected to drink lots of water on the day of the flush, and the day's prior to it. I was severely dehydrated. So I started drinking tonne's of water, and finally at 4pm I had some BM's and passed gravel-type stuff. I'm doing another flush on friday, and hope to have much better results since I'll be drinking lots of water.