about an hour ago, right after excersizing, i noticed a swelling on the right side of my penis at the base (unerect), about the size of a nickel. it was puffy but not hard, does not hurt. it is now extended all the way around, to be a band about an inch in width and puffed out about a 1/4 inch. i have not masturbated in several days. i had unprotected sex a week ago.