If I dont go to the gym sometimes, and I eat healthy will I be ok?

[Bouncing]

Hey basicially, I usually if Im ok go to the gym 3 times a week and eat healthy, odd takeaway once a week but apart from that eat healthy and go to the gym. Sometimes Im not well, and Ive still gone but if im not well like now I have stomach cramp and dunno If it will go in time but if it doesnt im not going to go is it ok if I eat healthy then just go tomorrow and then wednesday ill probs do? I weigh atm 8.0 stone i think its weighed in on the scale it says 8.0 anyway and Im 15 and Im like 5,7 - 5,8 i think...