Stomach full without eating anything.

I have had a different kind of food for two consecutive days when I went for a friend's marriage. From yesterday morning, I feel like my stomach is full though I eat nothing. When I try to eat it feels like food is not completely going into stomach but it is stopping somewhere after the throat. Sometimes i feel hungry but im unable to eat anything as even a little amount of food is making me feel like my stomach is full. I have vomited twice yesterday and also I have an upset stomach. Body temperature is also a little high and I feel a little feverish. I'm having frequent burps too. My stomach feels heavy though i hardly ate anything from yesterday. Please suggest me what has to be done. I have consulted a relative of mine who owns a pharmacy and he suggested me to take the following medicine. Norflox, omez d and gastica. I had gastica in the afternoon today but i still feel its the same..