Okay so question 1: why don't I have a cover line? I did last month at 97.8

Question 2 my boobs and nipples are becoming more and more uncomfortable heavy full and painful by the day. My nipples are starting to look strange to me and hubby said they look darker. My temps were looking great and then I traveled from NY where I slept with the heat on and bundled up to Florida where we slept with the AC on and in shorts and a t shirt. My temps dropped significantly. Am I grasping at straws or is Af on the way? Ovia says I should test today. I can test tomorrow morning since I am flying home tonight.