Hi I've attached a photo- I'm decently concerned as I've never had an STI before. Any advice would be tremendously helpful- thanks!
Im 22, male, gay and had anal sex a week ago. Thanks 
It doesn't look like herpes .
At all .
But I've never seen these type of things happen from a man's point of view ...
You should definitely get a swab done just in case ..
Was the sex unprotected? Looks like warts are a possibility here. Only way to confirm that though is at sexual health.
It was unfortunately- I would guess HPV as he was clean of all others STIs in a check up recently