G-Spots and bellybuttons

I dated a woman with the same condition(?)experienced by ThisYearsGirl. Unlike most erogenous zones, simple light touch had little effect. Mild force was needed to tug or poke it in various directions. She reported that she felt it deeper down, in the vaginal area. In this way she could approach, but not achieve, orgasm. My guess is an anomalous muscle or ligamentous connection transmits this motion in a way not common in the general population.

I’ve read that massaging the G-spot from the outside also feels quite good (not as good as getting at it directly, but still). Can anyone confirm/deny this?

TYG, I thought I was the only one that only had one kind of orgasm. I thought parts of me just didn’t work. Are you saying this is normal, and I can quit worrying?

Can anyone opine if this sensation mentioned in the op could be related to umbilical nerves that were severed at birth, and have been more or less dormant ever since?

(side question: I’ve always wondered exactly where the umbilical blood supply ties into the circulatory system of an unborn infant; I’ll just go ahead and suppose the arrangement of any nerves would connect close by somehow)

Right here, 'Uigi;
http://www.britannica.com/seo/u/umbilical-cord/
Follow the related links.
Peace,
mangeorge