Gerry,
I'm 14 days out myself, the pressure is the food, "hitting" our new walls of our "new" stomach I think. Did you take small bites? wait a few minutes inbetween?. its hard especially when we are used to eaten like someone's gonna ****** it out of our hands . Monday I had some beans/avacado, I ate too fast, too big bites, and I was still feeling it today, yesterday it was all liquids.
I would just do liquids if I were you, maybe that will help. Apparently when you get stuck, everyone has a different approach, whether it be throwing up, drinking pineapple juice. burping. Good luck!