low G Spot?

The G spot is the rigid thing in your vagina right? Well my husband started fingering me today and said it's really low and of course when everything was over with I decided to feel it and was shocked..it's like literally at the opening of the vagina! Slide your hands down the lips and it's there! Idk what's wrong! Will someone help me? I've missed two periods and all tests are negative! I'm panicking right now about how low it is! Thanks ladies