Thank you to all who responded. I'm glad to know I'm not the only one this has happened to. I have been feeding the duck eggs back to my mixed flock. I found a buyer for most of the ducks and will just keep a few as pets. Thanks again!
This is our first year with ducks. We love having them and they are laying great. Over the last 3-4 weeks every time I eat duck eggs, within an hour I feel nauseated and have actual pain in my stomach. They are always thoroughly cooked. It is now even happening with baked goods that I have...