You may not be able to do much now, due to lack of tools/parts, but here's what you can do:

Jack up that wheel and give it some spins by hand and check it's end-play. If it has a lot of slop, maybe you might be able to tighten up the hub and re-check. Also check to see if it's a dragging brake instead of a bearing.

Unfortunately, I wouldn't recommend driving on it, especially with your family in the truck. You may sadly end up with the biggest regret of your life. Either check it out yourself and solicit more info or get a professional to look at it.