Enlarged ovaries could indicate pelvic inflammatory disease (PID). Bacterial sexually transmitted infections generally cause PID, particularly chlamydia and gonorrhea. The infection starts in the vagina and spreads from there. In addition to the usual symptoms of enlarged ovaries, women with this condition may also have a fever and notice a change in vaginal discharge. Some women display no symptoms at all. PID is a serious condition that can cause scarring and blockage of the fallopian tube, leading to infertility.

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