FELT A POP!! 😬

I am nearly 6 weeks post op. Just recently testing the waters of weight bearing (can hobble around but not fully walking). Tonight I went out and while walking with crutches but partially weight bearing as I walked, I felt a pop. It felt like almost how it feels when your ankle cracks but it was right at my incision site/injury site. It hurt a bit when it happened but just briefly and not too much. I know scar tissue can break/cause this, but it certainly scared me. Did you have this happen? How did it feel? Should I be concerned?