Thanks for your query.Based on the facts that you have posted it appears that you have developed Orchitis on left side. However final diagnosis can be confirmed only on clinical examination and on Ultrasound
Scanning. Please consult qualified Urologist
for clinical assessment. Take some antibiotic like Augmentin
along with some anti inflammatory medicine like Diclofenac
twice daily. Visit your family physician to get prescription of these drugs.
It will get cured in a week.