I get this every so often, and it stays for WEEKS if not months, it's sore and weeps often (that's why it looks crusty) doesn't come to a head, and eventually goes away on its own. I look gross because it's so huge
Been in pain for over a week, finally decided to soak my foot and see if I could pull this ingrown nail out... This was the aftermath. Instant relief with some puss and blood.