<s>[INST] my husband has recently been feeling a burning sensation after incorarse. it only happend a few time so we ignored it and figured it may be nothing. he then found a bump on the top of the tube on his left testicle.  have had now been have very over active bladder. i thought maybe a uti but there is not burning or pain. and std was a thought however we have both only had one partner. what could this beand what should we do? [/INST] HelloThanks for query. Burning sensation after intercourse, bump on top of tube can mostly be due to infection of Epididymis (Epididymitis)Consult qualified Urologist for clinical and digital rectal examination and get following basic tests done to confirm the diagnosis.1) Urine routine and culture. 2) Ultrasound scanning of Scrotum.In the meanwhile start taking antibiotics like Doxycycline and Nitrofurantoin along with anti-inflammatory medication Diclofenac twice daily orally and urine alkalizer Catwalk thrice daily will help to resolve the issue. Ensure to Chat Doctor.  </s>