You are on the border line case of BMI 25. You will absolutely need to control calorioes to lose weigt. A good paramater for you is to see if you Jog about 2-3 Kms a day or burn atleast 250 calories through exerecise and do not take more than 1800 calories as intake. Do not crash diet
and never go on diet lesser than 1200 calories a day.