This theory doesn't really effect the finale of Apocalypse, but it does concern the fate of the current Supreme. Throughout the season Cordelia's health has been waning in a way that everyone read as her body making way for the next Supreme. However, as these Twitter users point out, Cordelia is obviously still quite powerful. If she were really powering down to make way for the next leader, it would be a bit more taxing than what we've seen. So what's the alternative? According to Reddit user blitzedginger, Cordelia could be finally getting her wish for a baby!
Coven fans will remember that the witch struggled with fertility during season three and it's obvious that her lack of biological children have led to the strong maternal nature of her leadership as Supreme. Cordelia's "condition" could be her body working overtime to take care of another powerful Goode witch. Considering the troubles she encountered trying to get pregnant, it would make sense that being with child would take a serious toll on her body. If this theory holds true, Cordelia would likely see the the other side of the Apocalypse!