As the title says, I feel an uncomfortable tightness under my ribs when I am sitting. I have only ever had this feeling before when 1) I was heavily pregnant or 2) I have put on a few pounds over Christmas.
But neither of those is applicable now - in fact I have actually lost 5lbs in weight and am not really overweight anyway. I go to the gym and run 3 times a week and recently upped my training schedule which accounts for the small weight loss. I am a size 12 and my BMI is within normal range.
In addition to the uncomfortable feeling I have also had some mild heartburn, which is unusual for me.
Anyone had any similar symptoms and got any ideas what this could be? Its a bit like feeling there is a rubber band tight round my middle although I am not wearing tight clothes.