g spot

I think my g spot is right at my vaginal opening? Everywhere i’ve read says it’s about 1-2 inches deep but i barely have to put my finger in and i can feel it. It feels exactly how everyone describes it and when i put pressure on it i get the feeling like i need to pee sensation so i’m sure that’s it? I’ve tried going further in but i find nothing? is this normal or could it be something else?