Sign or Symptom?
Well, "signs" are what you see.
So, you might see a black and blue mark if you really ripped it good. Also you would favor the use of that muscle, obviously--and tenderness ( sign) if you touched it Now, if you meant what do you 'feel,' that's a "symptom." And that would be pain using that muscle and probably less strength due to the pain from the injury. Muscles usually heal completely with time