Sorry I can't help you, but see a doctor. I know it's scary and embarrassing, but it could potentially life-saving (if anything is majorly wrong of course)
i've been to the doctor numerous times about things involving my wang and testicles, i've seen 4 different doctors, a nurse and a ultrasound guy. It's their job, they've seen them of all shapes and sizes, one doctor who examined my testicles once said "i've seen over 600 pairs of balls" so I really shouldn't worry.
Go and see them and good luck.