Can chlamydia spread from your penis to your anus/rectum? Background: I was diagnosed with chlamydia around a month ago but I recieved a one-time shot and a one-time powder (mixed wih water) and the symptoms have kind of gone away. My anus/rectum has been burning/itching for two weeks and it gets worse when I walk around a lot. No bumps or inflamation I can see. I m a heterosexual male (no anal sex) Follow-up, how long should the antibiotics take to get ride of the chlamydia because I m still having symptoms, though they re less severe? Another follow-up, how long should I wait before getting re-tested?