Hi, i'm a 31 year old male, a physical training instructor in the military. Recently i noticed a pea/bean size lump under the skin of my scrotum, low down between the legs. It isn't painful but i notice it more when i'm riding my bike. I've had the odd ingrowing hair in the past down there, which i've managed to burst after a few days, but this won't drain, it feels more solid! I've had it for 4 weeks.