Re: what on earth is this white spot on my nipple?
That kellymom pic... It's not a great one. A white spot with no pain- it could be a blister. That's my go-to when someone mentions a white spot on the nipple. Perhaps it's a minor one that is already opened (and therefore you're not getting pain or milk backed up behind it).
So I'd keep an eye on it, maybe slather on some lanolin, but I wouldn't stress as long as there's no discomfort.
Coolest thing my big girl said recently: "How can you tell the world is moving when you are standing on it?"
Coolest thing my little girl sang recently: "I love dat one-two pupples!"