Did i overreact

So it was 2 mins past my daughters bell for school all the kids were inside....we were a bit late. We walk by the parj to get to her doors and there is this guy just staring into space. kinda weird. It set me off (anxiety). Anyways the sebcond bell goes my daughter is inside and I start walking away but he is still there. There no kids in the park. Yes,he kid could of already went in but who knows. Anyway I went and told the office and the receptionist looked at me like i was crazy. 🤷‍♀️ She sent the principal out after i left be the guy wasnt there when i left. Should i have hust left it alone or....

Im very overprotective when it comes to my kids. the littlest things give me anxiety