Think I have a bad wheel bearing

[Scrapla]

Thanks, the things thats really bugging me is the fact that I dont know what exactly is making that noise and the fact that the drain plug is locked up just adds to my worries because I have no idea how much fluid or what it looks like in the diff. itself but thanks for the suggestion I might just take it to the "rear end" shop since I dont wanna mess up anything on my daily driver and there not expensive at all.