What Could Large Indent In Calf Muscle Causing Muscle Pull While Running Indicate?

Hi there i am just wondering about à deep indent in my right calf muscle. About à week ago i was playing basketball and as i tired to run i felt à POP in my calf and i was un able to walk for à couple of days. My question for u is my calf did not ball up nor did it swell i just see à large indent right through the middle of it so is this à tear or something eles. I have tired to run à little but i can feel the pull when i try.