Small dots on head of penis, is this normal?

I recently had sex with someone, kinda rough, and that night when i got back home i noticed what looks like tiny blood blisters under my skin. they dont hurt or itch and i cant feel them on the skin. my partner and i both do not have any STDs.

image

image

give it a few days. reminds me of when i went to take a condom off and it got stuck so like a dumby i pulled it hard and the whole ring of the head of my penis turned purple. went away after a few days.