Sorry to hear you're struggling with spasms. While I've never experienced those, I can tell you that you can have reflux with out knowing it. Silent reflux is very common, and often people stop by with reflux related problems but no heartburn symptoms.
It's good to hear that you've seen a GI doc. That's always wise. Glad to hear you've having some additional testing. Hopefully someone who's had similar symptoms will be by soon to share their experiences and support.
Nissen Fundoplication 2/09
"Whatever you fight, you strengthen, and what you resist, persists.”
“Worry pretends to be necessary but serves no useful purpose”
“Accept - then act. Whatever the present moment contains, accept it as if you had chosen it. Always work with it, not against it.”