I have had this single flesh like bump on my penis for a few months now, at first I thought it was a developing pimple. Forgot about until yesterday now realising that it has been some months later. I am concerned as it has no white head to bust. I have spent the last 24 hours researching what it could be, Coming to the conclusion it is not a cyst or an S.T.D. quite concerned as I can find no relevant information.