I spoke to someone I am close to this week on the phone and they told me that they had had pain in left chest and strange achy feeling in left arm and tingling hand for about 30 minutes last week, but that it had gone away and they had been ok since and so weren't worried. I don't know anything about heart health but feel worried, and just wondered if anyone could give me more info about this? They are around 45, and they had flu, and had been up looking after ill children for a couple of nights and they said they just thought it was muscular and to do with the flu. My reaction was that they should have an ECG just in case and I imagine that would be most people's reaction but if anyone has more knowledge or experience than me I would be grateful for their views.