Testing

Patient: A girl I used to have sex with has gonorrhea and chlamydia, but she thinks she got it after me. Is there any harm in assuming I have it and just order the antibiotics online without going to my dr? And I’ve had anal sex with guys a long time ago. Is the prescription the same for std’s regardless if I received them anally or from intercourse with a girl? And if I did decide to go to the dr and get tested, could I test negative if he just tests my urine, but still have std’s if I received them anally? Thanks

Doctor: