i second the heartburn, its HORRID! Today is day 6 for me as well and the heartburn is my only complaint. WEll..that and i cant seem to get any energy during the day and cannot sleep at night. Blah. Im in this for weightloss tho, and so far im down to 132 (from 143 beginning this fast) Orignal weight was around 190 sometime last fall.
Hope we get some insight! Congrats on day 6 :} its all cake from here!