I’m pregnant. How can chlamydia affect my baby? September 23, 2020 17:47 Updated Untreated chlamydia infection during pregnancy is linked to: preterm labor premature rupture of membranes low birth weight eye infection or pneumonia in your newborn Related articles How do I know if I have gonorrhea? How do I know if I have chlamydia infection? I’m pregnant. How does gonorrhea affect my baby? How is chlamydia spread? How often should I get tested?