I have used Oxypowder for about 2 years now, you should really try to take it slow, some times your body gets tired form the cleanse, and it needs a rest to. I have found that the company that makes Oxypowder has a site with common questions and answers as well, you may try there.
The cleanse is great, after a while it isn't such a big issue. You may also try taking a Probiotic; it may help with the bloating and digestion. I have found that my body has food sensitivity 's, and you may need to pay attention to the foods you eat as well, they may be bloating you up.