I agree, it would be hard to diagnose at such an early age. It's hard at any age as the symptoms of ADHD are of also things that kids normally do! So it's hard to say, you may just have a really high energy child!! So it probably wouldn't help seeing someone now in terms of getting a diagnosis. But what they can do is give you some tips on how to deal with the behaviour if this is what you need! And maybe just some support for you if you're feeling stressed out.
Hope all goes well.