Frequently urinating - doubt

A question that can be logical but you who have more knowledge will know more ...
When a child, young or adult presents diabetes symptoms and goes to the bathroom very often and drinks a lot of water, should it indicate that it brings the glocuse not?If at that time the sample is taken with the glucometer when you notice that it is very urinated, should the test be high?
And otherwise if it is drinking a lot of water and getting to the bathroom too, and the glucose is measured and it comes out normal?what does it mean

And in the mornings on an empty stomach how does it come out?And at 2 hours of eating?

The only test I have with glucometer that was taken was in the morning on an empty stomach was 105