does using subs & functions in a module conflict with the OOP concept?

hey,i have a question about the OOP concept, i'am using objects inside my program (which i wrote them), some of the main methods that i use are written in those objects and some in a module,does that conflict with the OOP technique, i.e does using OOP in my programs means that i should wrote all my functions & subs inside a class instead of a module?

Just like all tools... you have to do what makes sense.
What works for one thing may not work for something else.
I've used a mix of the two, there's nothing wrong with it.

-tg