This may sound weird but is there some type of disease or aliment for tight clothes?
What I mean is when I wear pants that are starting to get too tight om my waist when I sit down or my bra is tight I get stomach aches. It does not go away until I take off the tight object. And then it usually takes an hour for the pain to go away. This only happens when I gain weight and my clothes start to get tight.
By all means I usually wear very loose clothes.