I m trying to decide if I need to go to the ER....Earlier today, I started with a pain in my left side, not bad, just uncomfortable. Then it moved to my lower abdomen in the center and it s more severe but comes and goes. At its worst, it nearly doubles me over. I m experiencing chills and I know I have a fever, but have no way to check it at the moment. I ve also been very nauseous, but not to the point of vomiting. What are your thoughts? I do not have a regular doctor I can call.