Back pain advice please!!

So for 2 weeks now, I've had moderate nervy-feeling pain in my lower back, mostly concentrated on my left side. I figured it wasn't anything serious and kind of ignored it, because I'm in nursing school full time and don't really have time to be injured 😬 Then, this evening, I must have stretched or bent wrong or something, because shooting pain is running down my right leg and lower back whenever I move! I can't flex my feet without pain in my lower back; my SO had to help me to the bathroom and back just a bit ago because it hurts to walk. I suspect I have a herniated disc or something. Has anyone ever had something like this happen before?! What did you do to help it go away? I've had hip and back pain pretty much since middle school, but this is the worst I've ever felt. I tried sitting up in bed and I started crying 😭