I’m also experiencing the same. Surgery was on 12/27 and I was approved to start soft solids this week. I thought I was doing pretty good as I eat an entire Greek yogurt everyday for breakfast without any problems, but I experience the chest pain, nausea and vomiting after eating soft solids. Even when I try to belch I end up throwing up. Now I’m experiencing acid reflux from all the throwing up. Today I had bad reflux and ate 2 spoons of yogurt to try to coat my stomach, but I ended up throwing that up as well. I think the trick may be taking breaks after a couple of bites to give it time to digest. When I do this I’m able to keep the food down.