Lig almost like cartilage
Ok, so I curve to the left, and on the left side which I only noticed when I just started PEing there is a long stiff piece of something. I’m guessing it’s a ligament but it is so hard it feels like cartilage or something. It hurts alot when I do stretches to the right (hence putting strain on the left) and I can even pinch my fingers in there and grab a hold of it firmly. Also I cannot find anything like this on the other side.
Anyway, my question is this: am I right in assuming that it is a stiff/tense ligament and is responsible for the curve to the left that I have? Should it loosen up quickly with regular stretches? Could it be a sign of possible quick gains (since it is so tense)?