Call your doctor and let him/her know about this a.s.a.p. Only they can tell you if it's something to be concerned about.
That doesn't sound like a normal pregnancy symptom. Consult with ur doc maybe something else is causing this
I has the same felino my doctor told me to take priloset sincera thats heartburn
It could be heartburn/ acid reflux, or even anxiety. Best to call your Dr and be safe.