welcome
fears re swallowing food are common for anxiety sufferers and are mentioned here often, the main fear is of the food going down the wrong way, causing you embarrasment, if eating with company, in extreme cases people live on soups or put all food in a blender, this can last for years
the throat muscles are very complicated and anxiety can tense them up and stop their normal operation
the swallowing reflex is automatic and if you just keep chewing and someone distracts you, you will swallow without realisintg it
sometimes a check by a throat specialist may be needed, they see lots of anxiety sufferers with this problem