Heard a Pop During Bent Over Rows

All info, recovery tips & advise is greatly appreciated…I was wrapping up my last set of bent over rows, this set was a drop set…on my last 5 reps at a lighter weight than I started with…extending the bar down towards the floor I felt & a painful pop. I froze, was in shock & quickly Racked it up. Needless to say that was the end of my workout. I couldn’t do any immediate treatment (heat, ice) cause I had to return to work. The pain is dead center of my lower back, slightly above the waist line. I can stand straight up, twisting to the left hurts, the right side is fine. Bending forward and backwards is painful. I do have some muscle relaxers, pain pills & heat pad at home…will this remedy & a few days rest be sufficient?? Again any feedback is greatly appreciated thanks!