Is he alive in there?

I have one egg from a dozen that is actually developing (or was) out of them all & now I'm wondering if he's even alive still. It's day 5 & his development is right for what day he's on, so hopefully he is still kickin & I'm just worried over nothing. Anyway my question-his aircell was detached as the others so there's one bad thing, but now he & his entire "vein sac" (or the group of veins he floats in) that is attached to the yolk sac, is attached to one side of the egg. It's not floating in the middle of the egg but clung to the side, which maybe it's supposed to stick...I have no idea! So are they supposed to be floating or attached to the egg wall. Thanks! (=