I had the same issue. Shared it here:
Medical Student Disease/Syndrome
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I fit this. I thought I had a AAA for a long time. Then I scanned myself for reassurance.
I wish I was kidding.
I was rock climbing without a shirt on and after doing a relatively easy pitch quickly, ~800 feet off the ground my partner says, I can see your pulse on your stomach. Low and behold, you could see the deflections on my abdominal wall with each pulse. I had learned about AAA years prior. Despite having zero risk factors, couldn't get it out of my head for several months, every time I'd have my shirt off I'd notice it. So I took an ultrasound probe and checked. Then I
scanned myself in the research MRI scanner just to be extra sure. (didn't really feel like getting extra radiation from the CT)
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Thankfully, I'm reasonably skilled with an ultrasound and know what I'm looking for
😉