The effect of Low Carb Drinks

I have done great the last four months with out POP, not just regular pop but even diet. I have been a 3 can a day for energy drinks. I Love Blue (Low Carb) Monster- But at times have wen t with cheaper drinks. This week I had 1 can in two days, using caffeine pills to help with the fix. Something funny happen, my craving and hungry skyrocketed. I gain 2 pounds with trying to avoid these drinks. I might have to just get back on the Energy drink band wagon- Please not I only drink low carb or sugar free. I can stand the sugar in regular drinks.