severe backpain

HI ..my problem is my back. It palpitates rapidly everytime I get less sleep at night ..I have a trouble sleeping and so my back palpitates badly almost everyday.. And I know there is really something wrong with my back. It's on the upper area. I feel like it cramps or becomes numb and it palpitates and it's hard to breath. I consulted a doc before but it's negative and i dont believe it coz i felt somthing is not good in my back and i know it's serious. Im carrying this for 7 years. It feels terrible. I can't describe the feeling. it's not the typical pain when you're cut or wounded nor when you have stomachache or headache.. it's different. I hope you can enlighten me a little so i'll know where to start ..thank you Im a flipino not fluent in english(i dont know if you guys giving advices are filipinoes so i tried my best to word it english) and i hope you can comprehend or atleast follow what im saying..my english is bad im sorry.