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Your BMI is 24.5 - normal weight .Body mass index (BMI) is a measure of body fat based on height and weight.
Underweight = <18.5Normal weight = 18.5-24.9Overweight = 25-29.9Obesity = BMI of 30 or greater .
Well as per your BMI you need not to lose so much weight and if you want to maintain a good weight then avoid stress .Stress can play an important role in accumulation of fat apart from lack of exercise and improper diet .
A reasonable initial weight loss goal is to lose about 10% of your current body weight.A weight loss of more than 2 pounds per week is not good due to what is called Yoyo effect. It is the cycle of losing and regaining weight.
This happens when a person tries to reduce a significant amount of weight in a short period of time through rigid dieting and then suddenly discontinues dieting because of boredom or sheer hunger.
When this happens, the person gains weight but this time becomes even heavier than before dieting started.Apart from this if you have unexplained weight gain then you need to undergo Thyroid function test as well.I suggest you to consult your regular doctor for further evaluation and management .I hope this helps.