For 3 weeks i've had really bad pains, it would travel up my spine through my hips and into the left side of my stomach. any ideas what this could be?

No: Unfortunately, more history would be necessary to help you diagnose your problem. See your doc.

Non-specific: The symptoms that you describe can be caused by a great deal of medical ailments. It is best to follow up with a physician for further evaluation as they may need to do an extensive history, physical and battery of tests. All the best.