Do I have an abscess?

Patient: I have this small “crater” right above where my buttocks crack begins (maybe four or so inches above my anus) and it’s filled with puss. It only hurts (minor discomfort) when I touch it or sit awkwardly. I’m worried that it’s an abscess, but I’ve done my research on them and I’m not so sure since I’ve had it for a reasonable time and it doesn’t hurt. Is this something else that could just heal over? What else could it be?

Doctor: