I have a bump/lump on the right side of my balls close to my thigh, im not sure how long i've had it so i couldn't give you an exact date that i discovered it. I masturbate often so I don't see this possibly being a STD. At the same time, i'm afraid to see my family doctor about it. Is it possible that i can go to one of those small walk in clinics to get this looked at? What do you think this could be?