Chest pain. Anything related to heart?

Hello doc, my weight is 84.3kg I have chest discomfort from 2 years and 1 year back i have done ecg and 2d echo reports are normal. And from 1 week pain in shoulder blades and lower left side chest pain, I consulted gastroenterologist and done ecg and it is normal and wrote samproz 40mg and ulgel to use one month. Next day 1 AM I woke up with sudden needle sensation in the same place and went to hospital straight away and they done ECG and the report is normal and they gave pan injection and tablets after got some what relief and again mild needle like pain in the same place coming and going. My query is whether it is really gastric problem or anything related to heart ? By the way I also have anxiety issues, please help me am so much worried...