Heart attack. May lead to heart attack?

Doctor please let me know that ...I m suffering from severe depression and some times I have more pain in left side chest and I feel like heaviness and I feel my heart will blast and full of acidity and breathlessness often same thing I m facing from last one and half year ...this may lead to heart attack ??? When I get first time depressed in 2014 September in ECG it shows irregular heartbeat but no pain I consult to cardiologist they give me heparin and kept me in ICU for observation for 24 hours after that everyday I m facing with breathing difficulty and anxiety and left side chest pain and I consult with psychiatrist she prescribed me sertrax 50 mg and lonaxep. If necessary and I m suffering with pcod I m under treatment and I m working in saudiarabia as a nurse ...can I go back and can I start my work ??? Depression is treatable??? Having phobia that again I may get irregular heart beat and so please help me to know that depression may lead to heart attack???