I recently noticed that tiny red bumps have appeared on my penis shaft (over a month ago), roughly 10-15 of them. Extremely small, don't appear to be filled with anything. I have had no sores or discharge etc. I did have a burning sensation while urinating, my doctor told me it was chlamydia and gave me a prescription which i finished. The burning is gone and everything else is normal, except those tiny bumps are still there.