I'm on day 7 today of my juice fast. Think of your last juice you drank. Is it possible something was past it's prime? Maybe a piece of fruit that was too old? That's happened to me in the past. We are allowing ourselves small amounts of organic almond milk during our fast. That may help you. If I'm super hungry at bedtime, I will drink about 2-3 oz it it will satiate me. Feeling great. Hopefully, by time you read this, you're feeling better as well.