I will be starting another juice fast tomorrow. I try to go light on the fruit juice, as I also can have a bit of candida. I suggest granny smith apples. They don't have a high Sugar content and they taste so good mixed with carrots. You may have to watch carrot content also, use as many greens as you can. Swiss chard works the best. ANYHOW, as for your gut and/or digestion. I would recommend cabbage juice. It has been known to heal the digestive track in profound ways, also carrot juice is great for about any ailment you have. Look at some of the juicing blogs on here. I believe dazzle has many great recipes on her blog, and also livingwater is a great support on here, although I have not seen her lately.
I must admit I have not heard of doing an enema with hydrogen peroxide, and I thought I knew alot about enemas..a few drops of lemmon and a cup of chamomile tea will work well in your enema water. It will cleanse and relax your bowels. Not sure about the blood. Do address that issue.