<s>[INST] Hi, I haven t worked out in a long time and just started to again in the past 5 days, so I am very sore. But I am having a sensitivity issue with my left testicle, it is just more sensitive than usual and seems to be closer to my body. It probably started 2-3 days ago. I don t know if they are related, but its the only thing I can think of. What should I d [/INST] HelloThanks for query. Discomfort in left Testicle following exercise is mostly due to Varicocele . Please consult qualified Urologist for clinical examination and get following basic test done to confirm the diagnosis.1) Ultrasound Scanning of Scrotum.2) Color Doppler study of scrotum. Further treatment will depend upon the findings on clinical examination and results of these tests. Chat Doctor.  </s>