Okay, I had unprotected sex about a month ago. few days later noticed a small pimple like blemish on the shaft of my penis above the circumsion scar. i poped it and a tiny ammount of white material came out, very small amount. I took a shower went to bed, next day at work i noticed a small- very small sore like spot where the pimple was. its not rasied and no texture also painless but i can tell its there. only time it "stings" is when i masterbate due to the skin stretching. Ive noticed it for about 2.. maybe 3 weeks and theres no scabbing or draining fluids. the sore is very small at best im thinking friction burn from masterbation etc. any ideas?