Hi I Have Some Questions Regarding The Female Bellybutton And

Hi
I have some questions regarding the female bellybutton and sexuality. I have posted lots of questions about this in different forums and gotten replies here and there but never from any medical expert. It is quite obvious that some woman feel a connection between her navel and her genitals when she puts a finger inside or pokes it. Some women claim that when they put their finger in their bellybutton they get this ' need to pee' feeling. It's not like they really have to be but it's a sensation that is very similar. And many woman also claim that when did she spot this first stimulated there is a feeling like as if she needs to pee. Below are my 3 questions

1. Is there a connection between the bellybutton and the G spot area ? Because I have read in a website that the bellybutton nerve runs down to the urethral sponge in a woman and the urethral sponge is basically the G spot area. ?

2. The fact that a good number of women get the need to pee feeling... Is this because the bellybutton is connected to the bladder or is it more of a precursor to an orgasm ?

Appreciate all the help