Pain when going from sitting to standing?

Hey y’all, long time listener first time caller.

Had my (25M) L5-S1 procedure 6 weeks ago and yesterday into today i’ve noticed that the horrendous stabbing pain from sitting to standing has returned. We’re talking falling back down onto the couch the pain is so debilitating. Only lasts a few minutes before my back adjusts to finally standing but this never happened even before surgery. Anyone else experience this or have any advice? Second post op is a few days away so just curious in the meantime!