Hey TTG, I need help with Battlefield 3/Origin/Battlelog.

Okay, so I have an origin account, and when I try to log onto Battlelog, it says that I need to purchase Battlefield 3 to enter. I have Battlefield 3, so I've spent a good amount of time trying to figure out how to link my xbox profile to Origins, and I can't figure it out. If anyone can help figure out what's going on or if you've had this problem and fixed it, please tell me how.

Thanks!