Chlamydia is a common bacterial sexually transmitted infection, affecting around 1 in 10 young men and women and can cause serious health problems if left untreated.

Signs and symptoms – what to look out for


A change in your menstrual bleeding, periods becoming heavier or more painful than usual, or bleeding between periods.

Lower abdominal pain, or pain felt deep inside during or after sex. This can suggest that the infection has spread into the womb.

A change in the vaginal discharge, it may become discoloured, offensive smelling, or excessive.

Burning or a frequent need to pass urine.


Burning when passing urine, or an irritation of the urethra (pipe).

Discharge from the penis.

Pain in the testicles (balls).

Check out our page on Chlamydia

What next?

Under 25? Find a clinic, GP, for advice and information on contraception, sexually transmitted infections near you in Dorset.

Find your nearest clinic

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