Belly gain mass

Hey i‘m working as nurse since 1 year and i think i gain weight, but on the scale i have the same weight or don‘t really gain wait. I have the feeling my belly getting bigger or there is more fat, but don‘t change anything. I train 3-4 times and eat healthy. Okay sometimes i eat Little Bit more Candy, because its everywhere in our Break room 😅

Don‘t know what to do :/