Pus Cells in Urine and Fertility: The Connection Depends on the Cause

Whether pus cells (pyuria) in urine affect fertility depends entirely on the underlying cause.

If Caused by a Sexually Transmitted Infection (STI)

STIs like chlamydia, gonorrhea, or mycoplasma can cause pelvic inflammatory disease (PID), leading to fallopian tube scarring, tubal blockage, and infertility in women. In men, STIs can cause epididymitis or urethral strictures, impairing sperm transport. Prompt treatment is critical.

If Caused by a Urinary Tract Infection (UTI)

Typical UTIs (e.g., E. coli) are usually confined to the bladder/urethra and do not directly affect fertility. Once treated with antibiotics, fertility returns to normal. However, recurrent or upper UTIs (pyelonephritis) warrant investigation for anatomical issues.

Next Steps

• See a doctor for urinalysis, culture, and STI testing.
• Treat the specific infection identified.
• If planning pregnancy, ensure all infections are fully resolved and discuss any reproductive health concerns with your provider.

Pyuria is a sign of inflammation—always investigate the cause rather than assuming it's harmless or fertility-threatening.