Ds is 20 months and still nursing strong. I was having a lot of pain in my left breast, which I'm now pretty sure was yeast. I started using a little antifungal cream, and it's mostly cleared up. I should've taken care of it sooner, but I just figured it was pregnancy tenderness.
I did have some tenderness issues, though. They seemed to be worse at the same time my queaziness was bad. Then, both rather disappeared over the weekend. Could be because we were on vacation, and ds was nursing a lot less due to all the activity. Since we've been home, he's been nursing a lot, but it's not painful anymore.
I'm just taking it day by day, because it always seems to keep changing!