A few studies into the topic of chlamydia and pregnancy have found links to higher miscarriage rates and chlamydia infections, preterm labor or low birth-weight babies. But other studies deny any such link. What is certain is that untreated chlamydia infections can be passed on to a baby during childbirth. For the baby, this can lead to a nasty eye infection that can cause scarring and blindness if untreated. Babies that got chlamydia at birth can also develop pneumonia, something that usually manifests a few weeks after birth. Thankfully, treating chlamydia is extremely straightforward. Men, and women who are not pregnant or nursing, normally get a prescription for heavy antibiotics, either taken orally or as an injection. Pregnant women and nursing mothers are not able to take those, and get lighter antibiotics instead. If you have been diagnosed with chlamydia, you will probably start taking amoxicillin. It is important to be tested again a few weeks after you finish your course of antibiotics so that you can either get the all-clear or go through another course of pills.
We'd urge anybody who wants to try to conceive a baby to go through STD testing before getting pregnant, to avoid risking your fetus and having the stress of treatment during pregnancy. It's not just chlamydia that needs to be tested for, but a whole range of STDs. Take a look at our article "Is genital herpes dangerous for the baby?" to see what can happens if you suffer from another sexually transmitted disease in pregnancy. Nobody is immune from STDs, and there is no shame in having one. It is of crucial importance to receive proper treatment, though!