Generally, no. A soft-tissue strain (e.g., "pulled muscle) is more likely.

I have to ask...why (and how often) do you need to "move your head down
to your chest"? Reminds me of that old joke. Patient: "Doctor, it hurts
when I do this." Doctor: "Then don't do that!"

In my situation with a history of ulcers, I have never had the pain
that you're describing.  From what I've learned, most pains that are
related to ulcers are more from what they call Gastritis.  The ulcer
usually can be felt but you can usually determine exactly where it's
sitting.  At least I could.  If I were to 'guess', I'd say that maybe
you should see your doctor to see about the possibility of problems
with your gallbladder.  It could also be a rib problem.  So many
little things in that area. :)

Lisa