I too suffer from consitpation and have had two good flushes and will do my third on the 22nd.
My first flush was similar to yours except I didn't throw up. I had the pain and bloated feeling and passed stones and bm's for 6 days then finally passed pretty green ones.
I learned from the first flush to do a Bowel Cleanse first so that when the pressure is on, all that stuff isn't backing it all up. My second flush was fast and easy with results the next day and felt great since then.