The thing is, everybody has a different take on everything concerning flushes. Do what feels right to you. With time you'll be able to tell whether it's too early or it's ok to take a chance. Now judging from you previous flush, I would think that the remaining stones have shifted and might be causing pressure on a certain point. They might also be right next to the exit waiting for the next flush. You'll never know until you give it a shot. Keep in mind that everybody's body reacts differently and what might be right for them might not be the best thing for you.