Hi, thanks for your questions. Chlamydia is site specific so is found on the part of your body you were using for sex. The testing for chlamydia includes testing these sites, oral swab for oral chlamdyia, urine or swab test for penis or vagina chlamydia and rectal swab for rectal chlamydia. Chlamydia does not spread within your body. It is very catchy and easily transmitted by contact with sex fluids from one part of the body to another. We dont see chlamydia being transferred from your mouth to the vagina. We do see chlamydia  being well transmitted from back of throat to the tip of the penis in the throat. In general anyone who has chlamydia is asked to contact all sexual contacts in the past 2 months so everyone has the information to get tested and treated no matter what the contact was.