After effects rendering isn't working

Hello all,

I am some what new to this but I have successfully rendered two animations into a .mov. I just finished my third animation and when I go to render it into a .mov, it renders it really fast, the render time says 0 seconds and when I go to open my .mov, it is 0 seconds as well. But I double check my animation and everything is still there.

What do I do?!