Yeah, it happens. Use it as an opportunity to eat something your body needs - veggies, lean protein or something with potassium in it to help repair those muscles. Just don't overestimate the calorie reduction or use it as an excuse to eat something that doesn't help your body recover from the workout.
HW: 225, lost 75lbs in 2011 LW: 150
Losing again starting from 190lbs - 10/16/2015
Small changes add up. Striving to better than yesterday.