Pins and needles sensation in the legs are not related to scrotal lesions.They are due to neurological causes.
Pain in the testicle can be due to infection,torsion etc.
The correct diagnosis is confirmed by colour doppler of scrotum.
No need to go to emergency room.
Please take antibiotic and anti inflammatory drug for scrotal pain.
with anti oxidants and minerals for tingling
.You should consult a Neurologist
Wish you good health