I feel i can't breath normally all the time,my heart beat very fast,i feel very weird headache, i also shiver lots of time ..and i also feel stomach pain due to which i felt like vomiting and i got goosebumps all over my body .i m facing the breathing problem since from 5 years and since from last 2 years i facing this stomach pain sometime regularly and sometime once in month .i went to lots of hospital and all of test are normal but not able to get the answer what is the issue with me pls help