I'm not pregnant,i've been to 3 doctors with 3 different reasons yet the pain is still severe and i do feel nausea?

Pick a Dr and...: It's time to complete the evaluations and find an answer and treatment. That means a person should pick the primary care doctor who is the "best" in her view, out of the 3 doctors, and continue the evaluation. There are a lot of body parts in that area, but it's still a finite number of body parts, so there will be an answer. If any severe pain or trouble breathing, an ER visit is appropriate.