I've been to the gym for a week, and I haven't lost a pound? What happened?
That's your wrong way. You have to consult a fitness coach and ask him to give you a good way to lose weight according to your figure. It is not enough to lose weight by exercise alone. Only by combining diet can the effect be obvious. Don't eat high-fat and high-calorie foods, and don't eat too much, which will make all efforts to lose weight in vain.