What Causes Severe Pain In Lower Left Abdomen,back And Headache?

I have stabbing pain in my left lower stomach near my hip and I have back pain in my left lower back on the other side of my left hip as well as my right lower hip in the back when I have to go to the bathroom like P it hurts a little bit and then I pee in my stomach and then it feels a little better put pressure tonight I thought that as well as dizzy and nauseous and I had a headache and I get cold and on sometimes very hot sometimes very cold for the past two days