For a few weeks or so I've been losing weight. The reason? I get hungry (tho not as much, nor as often, as I used to get - maybe due to a shrinking stomach capacity) but as soon as I have a mouthful or two of food, I feel nauseaous and my hunger is sated. People have commented on my weight loss (I'm 5'11" and was only 11st/154Lbs to start with). Is it indicitive of a stomach ulser or tortion or something? I feel no abdominal pains at all.