I've experienced the same thing when doing the master cleanse. 2 people came right out and asked me about the circles under my eyes. My appendix started swelling and feeling more sore, around that time as well. I would like to find out a lot more info on healing the appendix. It's an organ that's ignored too often here. My wife told me my eyes gave the impression that I was very unhealthy around that time as well. I'm glad I did not push it too much.