My brother is 22 years old and he is suffering with severe chest pain since 2 days . He recently joined in a company and he is working night shift and is still suffering with schedule and he has past history of breathing problem and was admitted in hospital when he was 13 yrs and whenever the climate gets cool , he gets affected with cold . But this time it's chest pain , so we are a bit worried and ever since his job started a lot changed even with food habits and all. Along with chest pain he has a slight pain in left shoulder not left arm