I'm 17 years old and weigh 9st 6ibs at 4ft 11inchs. I've visited many BMI websites all of which state that I am overweight. I've tried many different diets, tried eating healthy, cutting out all bad foods, I even joined the gym and started swimming. Nothing seems to help me lose weight and it's beginning to make me feel low about myself and leaving me feeling depressed. 3 months ago I weighed just over 8st, I don't know what's happened! Someone please help :(