How to lose the last 5 pounds?

Patience. Stay the course of exercise and calorie control. Give your body's metabolism a chance to balance itself at your new lower weight. Try not to watch the scale too much. Keep your doctor involved in your weight management routine, asking her to measure you as well as weigh you.
Five to go... When you reach a plateau with weight loss it often has to do with your new basal metabolic rate and the fact your caloric intake is now matching that new set point. Recalculate your BMR and the consume 500 fewer calories per day to lose 1 lb in a week. Alternatively, increase your exercise so you burn 500 more calories per day for the same effect. Combining the two will work even faster.