Marks on my penis?

I admittedly don't know how to describe these marks? If you can call them that. A little contex. I had surgery about 3 weeks ago and after I got home I started to feel a faint sting or burning inside my penis and it hasn't gone away, however I do not think it's coming from the marks. Any help would really be appreciated!

image

I can provide another image if needed.

Did you have a catheter inserted during your surgery? Is your urethra irritated any?

to be honest I don’t see any marks.. maybe it’s the lighting but the head looks shiny to me.