Small bumps on edge of penis tip... help!!

So, i had unprotected intercourse multiple times with the same woman and since then ive been concerned about having STDs or STIs. So today i was looking at my penis checkig for sign of something abnormal at least to my knowledge. I noticed small bumps on the bottom part of the tip/head of my penis. I want to know if its an STD, STI, if so, should i worry about it?

****HERE ARE PHOTOS !! **
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Do a Web search for Pearly Penile Papules (PPP) and see if that makes sense - maybe you just hadn’t noticed them before?
You know about taking care of yourself with sex partners and protection and whether she was trustworthy or not .. it is up to you to make sure everything is right prior to penetration …