Do I have a torn knee ligament?

Alright so i was wrestling and I heard a pop in my right knee. It was bad first week was swollen couldn't bend it passed 90 degree couldn't straigten and i had to hobble. Now it's been 3 weeks and i walk fine, run, swim, jump, do all those normal things again. Only problem is my left side of my right knee has this weird hard thing i can move around. (it's 3 fingers diagonally across from my knee caps side) It doesn't feel like it's cartilage it's hard not squishy. I can move it around but not too because it starts hurting. Also my left side of my right knee seems to be the only part that is still in a minor pain. NO SUGGESTIONS ABOUT GOING TO THE DOCTOR PLEASE