I had a scare a couple years ago when a scan for something else showed I had a mildly dilated aorta. First doctor told me to stop training and think of my kids (I don’t have kids) so I found a cardiologist who specializes in athletes. We discussed my risk tolerance and the current state of science since there are very few studies on endurance athletes that have been at it for decades. Anyways we’ve monitored it with tests every 9mo to make sure nothing is changing and it’s been perfectly stable.
My suggestions coming from my experience would be to work with your doctor. Discuss your risk tolerance with them and your family, and come up with a plan. The best weapon against family members screaming “Those hard efforts will make your heart rate go up and give you a heart attack!!!” Is to say you’ve discussed it with your doctor and the benefit of me exercising like this outweighs anything negative I’m doing to my body.
Hopefully you’re able to keep doing what you love while staying relatively safe.