The issues you described are common detox symptons from grass juice consumption.Are you growing your own grass?If so is the wheatgrass flat moldy?The issues of detox should pass in a couple of days.Juiceing in general can lead to substantial detoxification.But consentrated grass juice is more like medicine than food.Start with a small dose and work your way up.If you have blood pressure issues use extreme caution!Be wise be green be healthy!!