wt=76 kg,ht=160,age=31.......Hb=11.3........suffer from tachycardia=90 HR....SINCE TWO MONTHS NOW WITH NORMAL HR=78.............has gastric pain 3 times per week .gases,cramps,spasm,mixed bowel habit constipation&diharrea........heart burn ...........pain at left side of the heart repeted.....pain chronic at peripheral extermitis..............what do you think the cause?