I have discovered that I can not eat duck eggs either. My stomach gets very queezy, and I end up in the bathroom all afternoon. I have narrowed it down to the duck eggs, as I have only eaten soft boiled eggs, the day they were layed. so I know they were fresh and it wasnt anything else. I have never had a problem with store bought chicken eggs... has anyone tried removing the yolk? I am not sure I want to try to eat them again. It's not a pleasant feeling and puts me out of commission all day.