You need to eat meat, poultry and fish daily because they provide protein, trace elements and certain vitamins to your body. Prepare your poultry the non-fat way: remove the skin and the excessive fat. Choose meat with no or moderate fat. Make sure the restaurant where you frequent uses healthy meat.
If your weight goes up a few pounds, don't fret. Weight fluctuates up and down over time based on what you might have eaten that day, water retention, muscle gain, and other factors. If you keep gaining weight week after week, then it's time to re-evaluate your weight loss plan.