If Atrial Septal Aneurysm's aren't suppose to cause pain then why do i have pain?

About 3 years ago i started complaining about my heart beating funny and little pains in my heart once in a while. My Dr would put me on an EKG machine for a few minutes and say there is nothing wrong. after a year of this my Dr sent me to a heart Dr where a buch of tests were run and that is where it was found. I was told it would never do anthing and to not worry. Three years latter the pains have become a lot stronger, in fact some times it is a bit scary. My shoulder and my back by my shoulder blade will hurt. But i ignore it because i was told it will never do anything. About a month a go i had a problem where i was diagnosed with a TIA. However, all the tests came back normal. I brought up the Atrial Septal Aneurysm that is suppose to not do anything and i was put on a heart monitor for 21 days. After which the stoke Dr only looked at the results of what the heart Dr said which was it will never do anthing. I said to the Dr that i have pain is that that anthing t worry about? I was told that an Atrial Septal Aneurysm does not cause problems and does not cause pain. I was told to take some ant-acids. I think that i know the difference between heartburn and a pain that is not right. But aparently i don't.