Short of breath because of aneurysm?

In 2022 I had a pulmonary emboli. They discovered also a celiac artery aneurysm and a small hiatal hernia. Last year they also discovered a dilated aortic root.
Now I am lately extremely short of breath and wonder if that could be from the aortic root being dilated in combination with the hiatal hernia?
I don’t think it is another PE because when I sit down I can breathe easier after a few minutes.
Anybody here has any experience with this?