I have pain in the middle of the chest but this pain is not limit to one specific area, I get pain anywhere in the chest but mostly in the left side, the middle of the chest and middle left of the chest also starts paining when I press it. Along with that, I always have some pain my upper and lower back. Sometimes pain in rib but mostly in chest (especially left side) and back. Sometimes I also feel suffocated. But, I feel no pain when wake up in the morning or after sleep, and no pain for sometimes after doing exercise and get some relief when take antacid. I have this issues since months. At starting I have sharp pain in chest, (especially middle) and chest tightness, suffocation but get relieved when taken antacid but after some days the pain started on regular basis. I have same kind of before but it was relieved on his own. I also feel chest pain when I am hungry. I too feel fast heartbeat sometimes especially when I lie down. Rarely, but sometimes I feel very little pain in chest while deep breath in. Do I have acidity issue or something else?