I did a hilly 35 miler this morning. Half way round I began to get chest pains. I slowed things right down and rode home. The pain came and went and at no point did it become too bad, just an ache. I have been home for an hour or so and the pain has gone but I now have real problems breathing. I honestly don't think it's my heart, although it's a dangerous thing to ignore it. I think I am going to have a shower and drive up to the NHS Walk In Centre and just get checked out. Probably turn out to be bronchitis (hopefully, compared to other things it could be).