I want 2 lose weight iin 15 days..specially in my thighs and stomach..please help..?

i dont kno hw i suddenly increased my 8 kgs in 4 months..nw i need strict dietary control and excercise....i cant wear my jeans..its very absurd..i feel depressed all the tym....please help..my job is that makes me sit all the tym in front of laptop....bt i need to reduce...............