Hi , I am also on day 3 , I had a bad headache that lasted for hours about 36 hours into fasting, now the headaches keep coming for just a few minutes and they pass. I have joined a Water Fasting forum and have made a fasting buddy . Would love to have you join us.
As far as the colonic, I have heard that they are very helpful, perhaps an enema kit would help as well, there is a lot of info on this subject in curezone, just have to look around.