Cyst ?

I have a knot about the size of a small marble in the same spot as this picture and it is as hard as a rock and cannot be popped no I did not try either 🤣it’s also kinda itchy but doesn’t really hurt unless I wipe and it’s not huge but it is getting bigger anyone know how I can get rid of it ? or atleast try to without going to the doctor first my parents think im a hypochondriac when I tell them I have things going on so I have to figure things out on my own .