I'm a 15 year old teen and i'm 5ft 9in(1.79832m or 179.832cm). I'm 16st 6.5lbs (232.4lbs or 105.4149kg). I looked on a bmi calculator and I have a bmi of 34. This really hasn't done anything good for confidence. I haven't been swimming for almost 3 years. I can't do some sports because I get tired out far too quickly. I'm ashamed of how big I am and I have been bullied for so long know that i feel like giving up. I really need help. Suggestions are greatly received. Thank you in advance.