I've been experiencing lower back pain, especially to the left side. It's a sharp pain, and sort of throbbing. It does not burn when i urinate nor does it feel like i need to pee more often. I am also experiencing nausea (seems to last all day) and lower abdominal cramping, kind of like bad pms cramping. The lower back pain is the most bothering. What could be the reasons for these symptoms! Any and all ideas are needed please!