Pimples on my penis. What are they?

I have 3 pimple like white bumps on my penis for about 2 months and they won't go away. I got an STD test and it came back negative. What are these pimples and how do I get rid of them? Should I get an STD test again?

image

image

image

if it itches its herpes

They dont itch

looks like moscullum go to doctor and you will be ok