hi, 20/m, i am currently experiencing a mild to moderate pain inside the head/tip of my penis, and have been for 5 days now. It sometimes burns a little when i start to urinate, but not very much. Just over a week ago i had sex with my new girlfriend and she was quite tight, my measurements are 6.75-7 by 5.5 depending on my arousal level so nothing massive. A few days prior she gave me a particularly painful teethy blowjob. JUst under a month ago i had unprotected sex with someone, so I am thinking it may be an STD. But i have no visible symptoms, no real problems urinating, and no discharge, so im not so sure. I intend on handing in a chlamidiya urine sample tomorrow at my GUM. Does anyone know what this pain problem could be? It feels mildly tingly / sensitive inside the penis head. If anything, it actually makes me want to masturbate more. I masturbate 7 times a week usually. Im thinking it may be bruising, an infection or an STD, but there is no discharge or any other symptoms. I know this may be a medical problem, but in my experience theyve been pretty useless at the clinic before and they jsut seem to fob you off. JUst wondered if anyone else has any explanations / experienced the same problems. Thank you for your help in advance.