Anexitey while eating/drinking in public? help!?

I have really bad anexitey while eating in public like a cafe/resturant/diner/hotel "conetinental breakfast" room. I sit down to eat and I can't eat because I can't swallow my food (for fear of choking? Idk) I'm like gripping the bottom of my chair or table when eating n I feel like I can't swallow unless I suddenly move n grip somethin else. For example yesterday it took me about 30 mins to eat a little more than half a chicken stripe(wrist to fingertip length). I also can't swallow liquids sometimes too. And on top of all this I have emetophobia(look it up if you don't know) can somebody please help me!? D: