I've been having terrible stomach pain for three days now and I'm not sure if I should consult a doctor or not. I thought that maybe it was something I ate or drank, but it's not just an upset stomach and it doesn't seem to be the regular symptoms of food poisoning. the pain is all through my abdomen, and it's starting to cause pretty bad back pain. if anyone has any suggestions of what it might be or what I should do, they'd all be greatly appreciated.