There's these penis bumps that could be mistaken for HPV. Google for Pearly Penile Papules, or have a look at this article: http://ravenshare.blogspot.com/2013/09/pearly-penile-papules-removal.html
you can take a rag or towel and soak it in white vinegar, wrap it around you entire penis and leave it for 3-5 minutes. Then remove the towel and inspect your penis using a bright light. HPV will show up as white spots, they do not have to be raised warts. HPV infects cells on the surface and those cells will become more apparent with vinegar soaking. Pay special attention to the rim around the head of your penis, under that little edge. That is predominant place HPV detected on males.
Hi you may have hit the nail on the head when you said rough Masturbating , are you using any Lube , that will help you allot it make's it smoother for you , Try K Y Jelly it is water based , but if the pinkish bumps don't go away seek medical help , you may like to take a few days off Masturbating it may clear up by self , Take care ,