<s>[INST] HI DOC...I HAD ANAL SEX FOR THE FIRST TIME AND BOUT THE NEXT DAY I HAD A BIT OF PUSS ON MY SCROTUM...AS DAYS WENT BY IT GREW INTO A HUGE BOIL WITH BURING SENSATION, PAINING WHEN I TOUCH IT...I KNOW ITS AN STD...WHAT CAN I DO FROM THIS POINT? ITS LIKE HAVING THREE TESTICLES [/INST] HelloThanks for query. You have developed Boil on scrotum after having anal sex. Please take antibiotic like Augmenting along with Diclofenac twice daily. For 10 days.If it does not subside or turns into an abscess you may need to consult qualified General Surgeon to get it incised and Chat Doctor. Ensure to clean and wash the genital area with warm soap water twice daily. Get basic screening tests for STD and HIV done to be rest assured about acquiring the same. </s>