Pelvic inflammatory disease can cause fatigue along with pain in the upper and lower abdomen, fever, and painful sex and urination, notes Healthline. Women suffering from severe cases of the condition may also experience vomiting, fainting and a fever over 101 degrees Fahrenheit.
Women with pelvic inflammatory disease have infections of the reproductive system, explains Healthline. Women who have sex before the age of 25, have multiple sexual partners or use intrauterine devices are at higher risk of developing pelvic inflammatory disease. Women with more severe symptoms should seek medical help immediately, as the infection from the condition can travel to the bloodstream, which may be life-threatening.