Hi, I noticed a small dark spot on my penis and I touched it and the dark skin removed and a tiny flat sore remained, no burning sensation or pain, no bleeding, no discharge, nothing.
I had a similar problem 2 and half year ago and the sore disappeared after 2 days. The new sore is just like that.
Is it std? I didn't have sexual relationship just a girl kissed my penis for just 1 second about 2 months ago. No other signs like fever and etc.
I didn't have sex ever, but my ex girlfriend gave me blowjobs for 4 years, but she did not have any signs of std like genital warts or sores.
What is my problem?