Even if you have PID, you might not have symptoms. If you do have symptoms, they could be severe. The most common symptom of PID is pain in your lower abdomen. Other symptoms that you may or may not have include
Vaginal discharge that may have an odor
Irregular menstrual bleeding
Pain in the upper right abdomen (rare)
Sometimes PID comes on suddenly with extreme pain and fever, especially if it is caused by gonorrhea.