Hello dear, thank you for using HCM. I read your query and understand your concern. arly-stage Chlamydia trachomatis infections often cause few or no signs and symptoms. When signs or symptoms occur, they usually start one to two weeks after exposure to chlamydia. Chlamydia trachomatis is caused by Chlamydia trachomatis bacterium and is most commonly spread through vaginal, oral and anal sex. It s also possible for a mother to spread chlamydia to her child during delivery, causing pneumonia or a serious eye infection in her newborn. Factors that increase your risk of chlamydia trachomatis include: Being sexually active before age 25 Multiple sex partners within the past year Not using a condom consistently History of prior sexually transmitted infection Hope it was helpful. best regards.