Thank you very much for the useful information Jay.
If the tests for STD's have turned out to be negative, then there must be other causes for these bumps, many of them are benign and do not require any kind of treatment in general, such as pearly penile papules, or blocked oild gland pores like acne.
You should see your Primary Care Physician and by have a close clinical examination he would be able to diagnose these with certainty, and if in doubt, he can refer you to STD specialist or a urologist for clinical evaluation (but i dont think it would be required).
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