cannot want meah???{with broken english}

Before my english for science and technology tuition class,i just came out from one of the tuition classroom and stood outside the other classroom.I complaint i having...noi should say i suffer from gastric pain again with my smilling face.And what my friend respon is "huh,you gastric still can with your smilling face,without any sweat out and also shiver."In my heart,i was thinking about "hah,cannot want meah?"But i tell my friend that erm...i never sweat and shiver even though i suffer the pain.