Share 'Juice Feasting question .. Help need some advice !'

Here is the thing.I just did a juice feasting for one week.I am kind of bummed out because I really wanted to go at least two weeks with it. When I first started it I felt awesome..It was great.I had lots of energy.I was sleeping well,my skin looks great until two days ago ...And that's when the heartburn started. I don't know if I over did the green juices with too much kale or what but I was...