Still a bit awkward with GF of 3 months, should I bring this up?

[kelnell]

You said you're worried about saying things which are uninteresting. It sounds more to me that you're issue isn't with not being able to keep up a conversation but having the confidence in yourself to say whatever you want. Instead of looking up stuff to say, look up ways to improve your image of yourself so that you don't worry about saying trivial things.