Hello and Welcome to HealingWell,
I am sorry your having this problem with the swallowing and choking sensation. I would like to suggest you see your physician as this is not only a sx of anxiety but can also be a physical sx and perhaps associate with GERD or another problem.
WE have a GERD Forum too if you want to check that out you may learn some new things about this same problem.
We are not professionals so please do see your Doctor. We are here for you to support you and to provide a safe place for you to come and express yourself.
Welcome to the family