Never make weight loss to be your only workout goal. What your scale says is not the most important number where fitness is concerned. Instead, focus on your performance, body composition (like fat percentage), body circumference measurements, and fitting of your clothes to measure progress.
Standing, hold a dumbbell in each hand at shoulder level, parallel to floor, palms forward. If you have shoulder problems, turn palms and weights to face each other. Extend arms over head, then lower to original position.