If you really want a CT Scan or any other imaging of the affected area, just go to the ER and complain about those symptoms. They usually will err on the safe side. That's how I ended up with a Cat scan during my last big attack, before I accepted it was anxiety. The downside is, it's horrendously expensive. My average ER visit, where they just drew blood, ran tests, and told me I was okay, was still around $4k USD. Even after insurance, I paid out an embarrassing amount of money last year between ER visits and dr's, just to be told it was anxiety. Learn from my expensive lesson, and treat the correct problem from the start.
Even if you go the ER and complain about your symptoms, they're not just going to give you a CT scan because you want one. There has to be a medically justifiable reason for doing so, especially with the radiation involved. The fact that BillyTheKid has had both a clear endoscopy and ultrasound, plus his age and other factors, means he's very unlikely to be given a scan just 'cause.
With all due respect, this is actually awful advice. We are health anxious people. Our anxiety is so bad that is DOES manifest itself physically, but by and large this is a problem of the mind, not of the body. To suggest that he go and seek more and more medical testing is counterproductive, as we ALL KNOW that these types of tests DO NOT lead to lasting reassurance. Yes, BTK might feel better about the fact that he doesn't have pancreatic cancer, but what happens when he's convinced there's something wrong with his liver, or bowels? Another CT scan?? No.
Billy, the testing cycle must stop sometime if you ever want to start feeling better. Not only would a CT scan put you in the hole for $4,000, it won't bring you the peace of mind you want. IT WILL NOT. Not ever. Trust me—everyone who's replied to you has by and large told you the same thing. You're so anxious right now that you cannot see the forest from the trees—and that's okay, we've all been there—but really, really (and I say this as someone who's been where you are), you need to at least TRY to challenge these out of control fears that you have. Recovery from anxiety is a very long and arduous process, and right now I'd say that you're not even in a place to start yet, but eventually, you will be.