My gf has stabbing sharp pain, doctors don't know what it is? Who should she see next?

Not enough info. Where is the pain? Is it muscles, head, abdomen? How long has she had it?Clarification would help us help you.Most doctors can determine cause of serious internal pain.Osteopathic doctors who do manual diagnosis & manipulation are especially adept at find & fixing the causes of neurologic, muscular and skeletal pain.