Thanks!  I experimented yesterday a little bit.  After doing some heavy squats, I did some light deadlifts.  Even deadlifts without weight was really bothering it.  Therefore, I was hypothesizing that hamstring tightness could be contributing to it.  After smashing them out and going back to deadlifting, the pain significantly decreased.  I don’t think this is the sole contributor, but loosening it up definitely helped.  Thanks for your help!  I would love to hear some thoughts from others too.