Every time i eat i feel like i should go run or work out?

Okay basically i want to know if this is the beginning of a mental health issue. Like every time i take a bite of food i calculate in my head the amount of calories i am adding to my body and i instantly start thinking i need to go run or i need to work out. I do suffer from OCD. could this be me obsessing or fixating on working out and my body? or is it a completely different mental disorder or should i not even worry about it?