GERD, pain near chest, weakness, uneasy.

Hello Doctor, I am obese 41years old man, I have Asthma, urticaria. I have been diagnosed with GERD. Endoscopy done on 31st January 19. Gastroenterologist asked me to do Motility disorder test. I later met few more Gastroenterologist. They gave me medicine for GERD. I am having medicine for severe GERD symptoms. I have done Master health check up, report is fine. I was having High BP, now I don't, hence stopped High BP medicine. Recently I developed body discomfort, uneasy feeling, pain in chest , weakness in left hand, left leg. I took ECG. It was normal,  but  advised to meet Cardiologist. I met Cardiologist. He told me I am having severe stress because I am not working not married. He asked me to do TMT to rule out block, but I refused due to GERD vomiting feel and body is weak due to less food intake. My weight has reduced drastically from 116kg to 108.5kg in 3 months. My question why uneasy feeling, pain in left leg weakness in left arm? Chest collar bone pain. Why?