Over the last couple of weeks i ve started getting chest/ heart problems which are stopping me sleeping. My heart seems to twinge or jump sometimes which is very disconcerting. I get hardly any pain though, maybe a slight tightness. I m sometimes aware of it beating too. Why is my heart/chest twinging and jumping ? Its now early saturday morning where i am in the UK. should i wait till monday ?. I can t sleep now because of them.