Bad pressure feeling on top of stomach below ribs, i'm not hungry or constipated. it feels like trapped wind, worse once eaten. how can i relieve it?

Side effects of med?: Your medication list suggests a couple of medications, typically not used here in US, that can have gastrointestinal side effects. While dromperidone should increase movement through the GI tract, I believe it is possible you could be having an adverse reaction to it. I would hold that medication for a day or two & see how you feel. During this time you could try simple antacids, i.e. Tums/Maalox