I noticed a hair follicle like lump on my scrotum skin. It increased in size after two days and was paining. I popped it up yellow pus came out and it reduced pain and scrotum size is normal. My doctor has suggested antibiotics yesterday after which I do not feel any pain. Testicles are moving freely..However, the skin around that lump has become little more firm in that area.. I am very worried due to that! Please help