Howdy! First of all, it looks like your pic is with the light shining up into the more pointy end. The air cell should be on the fat end. Did you try shining the light from the top down into the egg? That direction gives you a much better view. The pointy end can vary a lot at day 14. I do see active blood vessels, so that's great! Try candling the other way, and let us know what you see!
I will try that next time, thanks.