Indentation in my right butt cheek - advice? (photo)

Hello! I’m 25 years old and I have noticed since 4 months ago a depression in my right butt cheek, I can see it more in certain lights and I can feel it also. My question is can it be improved only with exercise? Or if I continue doing butt exercises is it going to be more noticeable? I remember doing a squat and feeling something like ruptured in my butt. Please help me!