Weak, constant breast pain burning, stinging and pain in breast, numbness and tingling, constant magraine, always tired and always in pain?

Complex: First, you need "adequate" tests. If something can be seen to explain your symptoms then you (and your doctor) will be much more satisfied. "Adequate" is tricky - doesn't mean "do everything" but does mean look with reasonable thoroughness. If tests negative and symptoms chronic then stress biology a common answer. Chronic stress heightens pain response and causes many other nerve symptoms.