Is there something I need to do different? Is it possible I don't have a g spot?

My husband has tried to find it but never can. Its suppose to be a thicker spot on the inside, on the top.

My friend said she got a g spot vibrator and it worked, and she squirted and it felt good. She did it in the tub.

I bought one and decided I would find it when hub wasn't home so I could tell him where it was. I got all ready for it. I was super excited! I got a towel and started working it. I tried for a long time. I couldn't find it. It was just not going to happen. I sure wanted it to!

What should I do different? Would it be better to use that deal and then lay on your stomach, so its vibrating more on the top?

Sorry maybe that's tmi but I would like to learn and try this.