I recently received a positive rectal chlamydia result and was given antibiotics. I am a gay male and all my other tests came back negative including the chlamydia urine test. I always have protected anal sex and have never had anal sex without a condom, but have had unprotected oral sex. The condoms never slipped and there was never any breakage. How did a receive a test positive for rectal chlamydia and a negative urine Chlamydia test?