Thanks for your query.Based on the facts that you have posted it appears that you have pain in your Left testicle after Laproscopic surgery for Lt inguinal Hernia
It is common to have inflammatory reaction in Epididymis
and Testicle after hernia surgery. Please take pain killers like Brufen
400 mg twice daily. It will get resolved over a period of time.It is available over the counter of medical store.