Okay so I made a thread before about how I was making an incubator & stuff. I got eggs from some lady & it's been about 28 days now. I do have an egg that has developed during the 28 days & today is the 28th day. For the past few days, the egg has been developing this weird spot on it but you can't wash it off. It's coming from the inside. That ^ It's a blue swedish egg that I received from some breader. I have been candling it about every 2 days & there's veins and all in it. But now on it's 28th day, I can't see anywhere in the egg when I candle it except for the bottom of the egg which is this picture: My second question is what is that yellow stuff on that side?< & Here's another picture showing some black stuff inside. Thanks in advance.