I am a 40 yr old female. I have been running fever between 99.5 - 102.5 on and off for the last 4 days. I am very tired. My stomach has suddenly swollen to the point that I look 3-4 months pregnant, in a matter of days. It is hard to the touch. No other swelling besides my stomach. I know I am not pregnant. I have a history of kidney stones, and recently, uti infections. I also have an ovarian cyst on the right side. I have mild lower right stomach pain. Hurts a bit when pressed on. Any idea as to what is causing this?