Women who have chlamydia during their pregnancy have a greater risk of infection of the amniotic sac and amniotic fluid. Chlamydia can make you more likely to give birth prematurely or even miscarry.
Untreated chlamydia can make you more susceptible to HIV and some other STIs if you’re exposed to them, and raises your risk of a uterine infection after you have your baby.
If you have chlamydia when you go into labour, you could pass the bacteria onto your baby. Your baby could develop an eye infection called conjunctivitis and some babies even develop pneumonia a few weeks after birth.
Before and after pregnancy, chlamydia can travel up from your cervix and infect your uterus or fallopian tubes, causing pelvic inflammatory disease (PID).
PID can result in permanent damage to your fallopian tubes, and lead to chronic pelvic pain and infertility and an increased risk of ectopic pregnancy if you become pregnant again.