Noticed it last night after mastrubating..it is one single bump. Does it look like it could be herpes or another STD? I had unprotected sex 9 days ago so I'm worried. Here are a few pictures
pic1: http://imgur.com/HiQC4Go.jpg
pic2: http://imgur.com/ud0bOn7.jpg
pic3: http://imgur.com/2HObVgs.jpg