As far as I know, you cannot load an Edge Animate .oam file into After Effects.
and i need this whole thing for a university project. I want to load my animations to a web page which i made using dreamweaver but i want to give to the user the oportunity to stop it and play it back. Isn't there an easiest way to do it?
I think you need to get rid of the idea of using After Effects at all. You can do what you are asking for in Edge.
This tutorial tells you how to jump around the timeline, but using the basic ideas you can see how to play, play reverse, and stop.