I have been throwing up everything i eat excep non acidic fruit, meat

For the past 2 weeks I have been only able to keep non-acidic fruit, meat, and whole potatoes. Everything else come up. I am not sick to my stomach but get a tightness in my chest like I have to burp and food comes up which makes me throw up. When I throw up everything smells like it is soured in my stomach. No other symptoms