I am sorry to hear that, but don't blame yourself for it. I think that with you being so early in your pregnacy when you had the miscarriage that the Master-Cleanse had nothing to do with it. The baby had not developed to the point where it was feeding off of you yet (you can research the stages of pregnacy). The first few months of any pregnacy is the highest risk stage for miscarriage. I had one as well a few years ago. The doctor told me that it's a very common thing, which doesn't necessarily mean that something is wrong with you. However, if you are trying to get pregnant again I would hold off on the MC.