Hi I have been using the computer a lot recently and when I lean forward I get left sided chest pain and for a while after it lasts for about 5 mins then goes away again. I also have a hiatus hernia and I had a large coffee decaf today in costa and then sausage egg sandwich this am for breakfast. I am thinking it could be that because I have a lot of wind. But I keep on thinking what if it is a blood clot on the lung or a heart attack. I have been googling which is stupid I know.