I'm male, 19, and I've been having sex very regularly and vigorously with one partner, without condoms. We're faithful to each other, I'd never had sex before, and she's been tested previously for STDs and has come up negative. One morning, i woke up with both lymph nodes swollen and dry, flaky skin and five pimple-like things under the head on one side of the penile shaft. They don't have pus, they're just red and have a scab-like centre. I applied alcohol and mupirocin cream. There was pain from the alcohol, but subsequent sprays had little or no pain. The day after, it had spread dramatically - there were more than fifteen in a random pattern, and some are developing on the scrotum as well as the head. There is no pain or any odd sensation during urination. The flaky skin is gone, however the area is sensitive and itchy. The pimple-things have no discharge nor am I getting discharge from my penis, but both lymph nodes on crotch are still swollen and painful, although it's receded very much now.