Thank you, indeed this was Angina, but I have kind of brushed it off and carried on running and it seems to have fixed itself, where the symptoms disappeared.

Thank you, indeed this was Angina, but I have kind of brushed it off and carried on running and it seems to have fixed itself, where the symptoms disappeared. I have few fellow runners who said they all had it, and it usually disappears after crossing a certain theshould in distance. Though you're right, when I read about it online all the warnings tell me not to ignore it.