I've gained so much weight since doing meal prep and I'm so frustrated

I used to make my food and bring it to work each day when I didn't want to wait for food from the cafeteria..but didn't bring everything. I could decide if I wanted to eat a lunch or dinner during my shift. I could even skip if I wasn't hungry. I was in great shape. I could eat a whole pizza and ice cream and not gain a pound. <br><br>I was told I was the thinnest 5' 10 1/2" guy in my unit. I was 198 lbs. I've been losing weight since I got out. 198 was high for me. <br><br>So when I started a meal prep service, my weight went from 170 to 192! That's 22 pounds in 2 months! I'm so tired and feel awful. <br><br>I started cooking my dinners, but the weight won't come off as fast as it's gained. I'm confused and tired of the meal prep company..but don't want to cook all the time.<br><br>What did I do wrong? Should I have done a calorie count? Should I have just cooked?