Chest pain. It heart problem or acidity.

Age 26 years, 9 days ago, after eating channa daal, and sit of 5 hours continue,  it's start loose motion from next days, about 12 times within 10 hrs, and seek from fever with temperature 101, took paracetamol, fvr got normal...99.3 degree around 6 pm, and control to 98.6, according to day down, no fever from 7 days, but acidity problem continue, after every 15 minutes, too much acidity formed, and after going toilet, only acidity released, and from 5 days, too much acidity, 1 day before yesterday, its too much pain in chest after dinner, also pain in backside,  relief after 15 minutes, after acidity passed, yesterday, little pain starts in right side, on walking in evening time, today, stomach is heavy, a little needle pain here and there in chest...today i took rebisec dsr tab before breakfast, rather problem continue, suggest, is it heart problem or acidity...please... thnq.