Hello, A few days ago I noticed a crater-like indent on the corona of my glans . There is no pain or discharge , and it is not an open sore. Just a small crater that appears similar in color to my glans, only with a bit of a raised outline around the indent . I am in a long term relationship, and we are both monogamous. We had been having unprotected sex for about a year now, and recently we used condoms ...it was after this that I noticed this issue. Any thoughts?