My entire left side of my body has constant pain. started about a year and a half ago as just left shoulder pain. but now its my left arm, hand, butt, leg and foot and within the last month now my left side of my face please help me. please.?

Slowly progressing pain is most probably due to neurological problems. It could be Fibromyalgia, Nerve impingement, or even a progressive neurological disease. Your biggest priority is to see your regular Dr who can do a complete evaluation and exam including a neurological exam and make a more concise diagnosis. He may need to refer you for testing and to a neurologist.

I agree with Dr. K's advice but would bypass your PCP and consult a neurologist straightaway to save time. The issues here would include possible fibromyalgia, hysteria,thalamic pain syndrome due to a lesion in the thalamus. In my opinion,this type of complex workup belongs in the province of a neurologist

I suspect a problem in the brain or the nervous system. It can also be a psychosomatic syndrome where you feel this is related to unrecognized emotional issues. See a doctor

Focal pain of this sort has been rarely seen following a stroke, but that would be sudden not gradual. Cannot exclude other intracranial mechanisms, and a thalamic pain syndrome has been mentioned. Best to obtain MRI of brain and clarify causation. Yes, you would benefit by neurological consultation.