I Keep Forgetting How To Swallow?

Only with food. I just keep chewing it and I do okay at first but by the end of what I'm eating I forget to swallow and it just starts sliding down my throat making me gag and choke. I can drink but not eat. This is the 2nd day in a row. It didn't happen when I ate oreos or cereal, but every time I ate something with bread in it like a chicken patty with buns, and a hot dog in a roll I choked. I just forgot how to swallow. So I just end up not finishing it and throw it away. But it just happened a little when I ate some green beans. Why is it happening? I mean I've forgotten how to swallow a couple times before with drinks but never like this.