I need advice

I am extremely scared of the future. I am a young girl with gastritis. I’m not gonna say my age for safety purposes. But I just needed to be heard. I have gastritis. And I mainly eat good most part. But I am struggling so so much with being able for it to stay that way. Because when I get home from school sometimes I binge eat anything. And I just don’t know why. I’m just scared and I start to get stressed. But I know if I keep having cheat days it just makes it flare and I know if I keep doing it it will make the healing process longer. I just needed advice because I wanna know if it’s okay to have cheat days so I can feel less guilty about things. And I just don’t want it to get worse in the future. It’s healed pretty well for now but it’s still there and I just dont wanna make the healing longer cause it’s already an everyday worry.