Diet plans do not work, and they ruin your body and are very VERY unhealthy. Go to a doctor, the only 3 diets i will suggest are: the Dukan Diet, The HCG Diet, and the Blood Type Diet.
Fastest way: Do a cardio work out 45 mins- an hour and a half 6 days a week, do strength training 4 days a week. Cut out anything unnatural and unpure in your diet. Stop eating gluten, sugars, and dairy. Eat Lean proteins and non starchy vegetables.