I Have an aortic arche aneurysm of 6.00 sadly it is inoperable due to other health issues, Recently I’ve had a dreadful cough,as you can imagine I was very scared it was going to dissect. Luckily it didnt,I’m hoping it means my aorta is still reasonably strong, I have had my anuerysm 9 years it started at 5.2 So I think you shouldn’t worry to much.