Cardiac related. Visit doctor to doctor.

Dear doctors here I am a 29 year old man . Last several months I am getting many symptoms like heart disease. These are my Symptoms 1 ) whenever I walking fast I feel pain diaphragm area. Thumbing heart beats in stomach area. Left hand pain..pain in upper back.. 2) cannot sleep well woke up. Suddenly in sleep with palpitations and pain in middle of breast bone. Everyday happen this palpitations make me more weak... 3) don't feel any energy even talking cause me breathlessness.. I have done three times ecg,Echo and ELR all are normal..but I am very tired my weight gone down 48 kgs from 53kgs...no doctors in kolkata treat me thoroughly ignore me...my life is become miserable...please help me I am very much depressed...feel like no hope in my life..day by day my heart become weak. I can go anywhere but please treat me hear my voice no one hear me properly and my Symptoms even bigger cardiologist. I am frustrated to visit doctor to doctor.