Trying to lose that much weight in a month is VERY dangerous

and more likely than not, won't stay off. Maybe if you re-prioritize why you are losing weight, ie. because you want to be healthy, as opposed to getting an outfit, would be a much better goal. Initially, as I'm not sure how much weight you want to lose, cutting back on processed foods and drinks except for water and a glass or two of skim milk will probably show pretty quick results. Your body tends to lose what people call "water weight" once you decrease the amount of processed foods (fast food of any kind, chips, nachos, pizza, white bread, pasta, soda) because these types of foods tend to keep the "water on" as they are high in sodium and other various chemicals. Eating fresh veggies, salad, chicken, turkey, fish, almonds, whole wheat breads, fruits and low fat/cal dairy products

will more likely make you feel better and look better too.
Incorporating exercise

into your daily routing would also help, although you may want to get a physical first before starting any type of exercise routine. If you are mostly sedentary, a good 20 to 30 minute walk every day will help to boost your burning of calories. Joining a YMCA and getting a trainer to help you with a lifting routine would build muscle mass and increase your matabolism.
On a final note: I was a very heavy child and teenager. Around the age of 15 I began playing sports, and was VERY sore for a good month, as I was easily 30 pounds overweight. I slowly changed my eating habits, and now, over 15 years later, am still tweaking what I eat and how I exercise...but I never, ever have "dieted"...I eat very healthy and exercise often. On the other hand, a friend of mine in her late forties was also a heavy child and teenager, but took to the "diet of the month" way to lose weight..aka. yo yo dieting. She tried everything and went up and down for years...needless to say, 3 years ago she had to have her gall bladder removed

due to gallstones which her doctor told her comes from, among other things, yo yo dieting. I hope that you consider the "safe way" over the "quick way" to a healthy body. Good luck!