Back pain..

So I'm 26 weeks and just today I started feeling back pain.. I ask my mom and she said I need to watch it because it can be back labor.. But I don't know what labor even feels like??!! And I'm kinda scared.. I probably sound so stupid, but what does back labor feel like?? Or am I just being paranoid... I can't call my dr, it's 2am where I'm at, and her office is closed..