I was doing a Muscular Endurance workout at home. I was doing split leg jumps. Randomly, I felt a sharp pain above my kneecap that made me audibly say “wow!” I stopped for a little, stretched some more, then started working out again. I could feel it slightly but not as bad; however, now my knee was making a crunching noise.

It went away.

Today, multiple weeks later, I felt is doing some body-weight squats. It was not nearly as sharp, but I feel the pressure. The crunching noise is there.

What happened? Should I ignore it? Can I keep training?