Yes, getting checked is a good idea for sure. I have a 4.5 ascending thoracic aneurysm and my cardiologist didn't ring any alarm bells. I had an ECHO in May and he said come back in a year for another one. Having done a lot of research on the topic, I responded with the fact that other individuals in the 4.5 range were having their aneurysms monitored every six months. He said we'd discuss it when I came back in six months. I see him in May 2020. Worrying about it will only stress you out and prevent you from enjoying life. When I don't dwell on it and imagine how much time I have left to live and will I be in pain if it ruptures and for how long and will I be going to heaven or hell (I don't really believe in a "hell"), then I stop and say to myself there is nothing for me to do but surrender to the inevitable. That inevitable is for everyone, including me! Live your life to the fullest and cultivate a philosophy which embraces life -- not just physical existence, but spiritual existence as well. I feel fortunate that I know I have this and it could remain stable for years and years to come and so can yours. Take your blood pressure medication and do what your doctors tell you to do.