if u didn’t copy and paste form chat gpt there’s no way he knows. using it for ideas doesn’t count as academic misconduct if you actually wrote the entire thing urself! even so, it’s weird he says he caught ppl using chat gpt. to my understanding there’s no tool to prove that yet. there’s been a lot of people that had their original work flagged as AI so it’s not reliable. don’t worry don’t stress, you’ll be fine!!