yesterday  I climbed steps for three floors.usually i hate this as i have a feeling that i will get a heart attack. after that i has symptoms of gastritis,thats lots of burping. today my left arm is paining and slight burning sensation near heart. My hblood pressure is generally slightly low.i am 38yrs,female.
For a 38-year healthy female, the symptoms you describe is mostly for gastritis with some reflux.  I would suggest you that you cut on spicy, fried food, no coffee, chocolate, aerated Chat Doctor.  If significant.  Tab compare D 1 in the morning 15 mins before breakfast for 3 weeks.  Its available OTC. However, if you have similar symptoms which increases while you are climbing stairs, I suggest you to get a treadmill stress test done to rule out heart pathology.  Also, lastly remember, not exercising, you may get a heart problem, and you don't get an attack if you regularly work.  Regards