I've just spoke to my mum who has told me that my dad has had some tests and although they havent come back yet, the Dr's are almost sure he has Angina.
Its been a real shock for him as he has always exercised, did marathons, played football, bikes to work everyday. He's also always had a very good diet. He'll be 50 this year too.
However the Dr's think it could be hereditory.
Now apart from the Dr's telling him this, that is all they have done. They havent given him any advice on what to do now, like how much exercise can he do, should he still be cycling to work etc.
Can anyone offer any advice on this?