hi there
I don't think it's angina you have, my grandfather is 71 and has had angina since he was in his 40's and has had a triple bypass done and an artificial heart valve put in.
He says the sensation of angina is like someone is grabbing your heart and squeezing it, trying to make it stop. He also says it feels alot like a heart attack but not as bad.
When he gets an angina attack he suffers breathlessness for longer than half an hour, along with that he feels giddy and then needs to sit down and rest and take 2 sprays of his nitrolingual spray (the one in the orange bottle) under his tongue, more if it is really bad!.
I would see your Doctor about your symptoms still as everybody is different, I hope it's not angina, nobody would wish that on anyone!.
I hope you start to feel better soon and I hope it's a passing thing and not anything serious for you.