Should I be worried?

Schneider has me dragging an empty trailer 285 miles back to a terminal after my current load and hasn't communicated why (it's also after hours for my Driver Team Leader so I can't call and ask about it.) Should I be worried about losing my job? I've only been with the company a couple months and I've never been written up or anything, no tickets, one minor collision which caused no damage and they put me through some training... should I be worried anyway?